diff --git a/browser_tests/fixtures/ComfyPage.ts b/browser_tests/fixtures/ComfyPage.ts
index 2f6fc0b14..c30bc55e7 100644
--- a/browser_tests/fixtures/ComfyPage.ts
+++ b/browser_tests/fixtures/ComfyPage.ts
@@ -10,6 +10,7 @@ import type { KeyCombo } from '../../src/schemas/keyBindingSchema'
 import type { useWorkspaceStore } from '../../src/stores/workspaceStore'
 import { NodeBadgeMode } from '../../src/types/nodeSource'
 import { ComfyActionbar } from '../helpers/actionbar'
+import { PerformanceMonitor } from '../helpers/performanceMonitor'
 import { ComfyTemplates } from '../helpers/templates'
 import { ComfyMouse } from './ComfyMouse'
 import { ComfyNodeSearchBox } from './components/ComfyNodeSearchBox'
@@ -143,6 +144,7 @@ export class ComfyPage {
   public readonly templates: ComfyTemplates
   public readonly settingDialog: SettingDialog
   public readonly confirmDialog: ConfirmDialog
+  public readonly performanceMonitor: PerformanceMonitor
 
   /** Worker index to test user ID */
   public readonly userIds: string[] = []
@@ -170,6 +172,7 @@ export class ComfyPage {
     this.templates = new ComfyTemplates(page)
     this.settingDialog = new SettingDialog(page)
     this.confirmDialog = new ConfirmDialog(page)
+    this.performanceMonitor = new PerformanceMonitor(page)
   }
 
   convertLeafToContent(structure: FolderStructure): FolderStructure {
@@ -762,7 +765,7 @@ export class ComfyPage {
         y: 625
       }
     })
-    this.page.mouse.move(10, 10)
+    await this.page.mouse.move(10, 10)
     await this.nextFrame()
   }
 
@@ -774,7 +777,7 @@ export class ComfyPage {
       },
       button: 'right'
     })
-    this.page.mouse.move(10, 10)
+    await this.page.mouse.move(10, 10)
     await this.nextFrame()
   }
 
@@ -1058,6 +1061,14 @@ export const comfyPageFixture = base.extend<{
     const userId = await comfyPage.setupUser(username)
     comfyPage.userIds[parallelIndex] = userId
 
+    // Enable performance monitoring for @perf tagged tests
+    const isPerformanceTest = testInfo.title.includes('@perf')
+    // console.log('test info', testInfo)
+    if (isPerformanceTest) {
+      console.log('Enabling performance monitoring')
+      // PerformanceMonitor.enable()
+    }
+
     try {
       await comfyPage.setupSettings({
         'Comfy.UseNewMenu': 'Disabled',
@@ -1078,12 +1089,24 @@ export const comfyPageFixture = base.extend<{
       console.error(e)
     }
 
+    if (isPerformanceTest) {
+      // Start performance monitoring just before test execution
+      console.log('Starting performance monitoring')
+      await comfyPage.performanceMonitor.startMonitoring(testInfo.title)
+    }
+
     await comfyPage.setup()
     await use(comfyPage)
+
+    // Cleanup performance monitoring and collect final metrics
+    if (isPerformanceTest) {
+      console.log('Finishing performance monitoring')
+      await comfyPage.performanceMonitor.finishMonitoring(testInfo.title)
+    }
   },
   comfyMouse: async ({ comfyPage }, use) => {
     const comfyMouse = new ComfyMouse(comfyPage)
-    use(comfyMouse)
+    void use(comfyMouse)
   }
 })
 
diff --git a/browser_tests/helpers/performanceMonitor.ts b/browser_tests/helpers/performanceMonitor.ts
new file mode 100644
index 000000000..1f58d9362
--- /dev/null
+++ b/browser_tests/helpers/performanceMonitor.ts
@@ -0,0 +1,206 @@
+import type { Page } from '@playwright/test'
+
+export interface PerformanceMetrics {
+  testName: string
+  timestamp: number
+  branch?: string
+  memoryUsage: {
+    usedJSHeapSize: number
+    totalJSHeapSize: number
+    jsHeapSizeLimit: number
+  } | null
+  timing: {
+    loadStart?: number
+    domContentLoaded?: number
+    loadComplete?: number
+    firstPaint?: number
+    firstContentfulPaint?: number
+    largestContentfulPaint?: number
+  }
+  customMetrics: Record<string, number>
+}
+
+export class PerformanceMonitor {
+  private metrics: PerformanceMetrics[] = []
+
+  constructor(private page: Page) {}
+
+  async startMonitoring(testName: string) {
+    await this.page.evaluate((testName) => {
+      // Initialize performance monitoring
+      window.perfMonitor = {
+        testName,
+        startTime: performance.now(),
+        marks: new Map(),
+        measures: new Map()
+      }
+
+      // Mark test start
+      performance.mark(`${testName}-start`)
+
+      // Set up performance observer to capture paint metrics
+      if ('PerformanceObserver' in window) {
+        const observer = new PerformanceObserver((list) => {
+          for (const entry of list.getEntries()) {
+            if (
+              entry.entryType === 'paint' ||
+              entry.entryType === 'largest-contentful-paint'
+            ) {
+              window.perfMonitor?.measures.set(entry.name, entry.startTime)
+            }
+          }
+        })
+        observer.observe({ entryTypes: ['paint', 'largest-contentful-paint'] })
+      }
+    }, testName)
+  }
+
+  async markEvent(eventName: string) {
+    await this.page.evaluate((eventName) => {
+      if (window.perfMonitor) {
+        const markName = `${window.perfMonitor.testName}-${eventName}`
+        performance.mark(markName)
+        window.perfMonitor.marks.set(
+          eventName,
+          performance.now() - window.perfMonitor.startTime
+        )
+      }
+    }, eventName)
+  }
+
+  async measureOperation<T>(
+    operationName: string,
+    operation: () => Promise<T>
+  ): Promise<T> {
+    await this.markEvent(`${operationName}-start`)
+    const result = await operation()
+    await this.markEvent(`${operationName}-end`)
+
+    // Create performance measure
+    await this.page.evaluate((operationName) => {
+      if (window.perfMonitor) {
+        const testName = window.perfMonitor.testName
+        const startMark = `${testName}-${operationName}-start`
+        const endMark = `${testName}-${operationName}-end`
+
+        try {
+          performance.measure(`${operationName}`, startMark, endMark)
+          const measure = performance.getEntriesByName(`${operationName}`)[0]
+          window.perfMonitor.measures.set(operationName, measure.duration)
+        } catch (e) {
+          console.warn('Failed to create performance measure:', e)
+        }
+      }
+    }, operationName)
+
+    return result
+  }
+
+  async collectMetrics(
+    testName: string,
+    branch: string = 'unknown'
+  ): Promise<PerformanceMetrics | null> {
+    const metrics = await this.page.evaluate(
+      ({ testName, branch }) => {
+        if (!window.perfMonitor) return null
+
+        // Collect all performance data
+        const navigationEntry = performance.getEntriesByType(
+          'navigation'
+        )[0] as PerformanceNavigationTiming
+        const paintEntries = performance.getEntriesByType('paint')
+        const lcpEntries = performance.getEntriesByType(
+          'largest-contentful-paint'
+        )
+
+        const timing: any = {}
+        if (navigationEntry) {
+          timing.loadStart = navigationEntry.loadEventStart
+          timing.domContentLoaded = navigationEntry.domContentLoadedEventEnd
+          timing.loadComplete = navigationEntry.loadEventEnd
+        }
+
+        paintEntries.forEach((entry) => {
+          if (entry.name === 'first-paint') {
+            timing.firstPaint = entry.startTime
+          } else if (entry.name === 'first-contentful-paint') {
+            timing.firstContentfulPaint = entry.startTime
+          }
+        })
+
+        if (lcpEntries.length > 0) {
+          timing.largestContentfulPaint =
+            lcpEntries[lcpEntries.length - 1].startTime
+        }
+
+        const customMetrics: Record<string, number> = {}
+        window.perfMonitor.measures.forEach((value, key) => {
+          customMetrics[key] = value
+        })
+
+        return {
+          testName,
+          timestamp: Date.now(),
+          branch,
+          memoryUsage: performance.memory
+            ? {
+                usedJSHeapSize: performance.memory.usedJSHeapSize,
+                totalJSHeapSize: performance.memory.totalJSHeapSize,
+                jsHeapSizeLimit: performance.memory.jsHeapSizeLimit
+              }
+            : null,
+          timing,
+          customMetrics
+        }
+      },
+      { testName, branch }
+    )
+
+    if (metrics) {
+      this.metrics.push(metrics)
+      console.log('PERFORMANCE_METRICS:', JSON.stringify(metrics))
+    }
+
+    return metrics
+  }
+
+  async finishMonitoring(testName: string) {
+    await this.markEvent('test-end')
+    await this.collectMetrics(testName, 'vue-widget/perf-test')
+    console.log('Finishing performance monitoring')
+    // Print all metrics
+    console.log('PERFORMANCE_METRICS:', JSON.stringify(this.metrics))
+
+    // Cleanup
+    await this.page.evaluate(() => {
+      if (window.perfMonitor) {
+        delete window.perfMonitor
+      }
+    })
+  }
+
+  getAllMetrics(): PerformanceMetrics[] {
+    return this.metrics
+  }
+}
+
+// Extend window type for TypeScript
+declare global {
+  interface Window {
+    perfMonitor?: {
+      testName: string
+      startTime: number
+      marks: Map<string, number>
+      measures: Map<string, number>
+    }
+  }
+
+  // Chrome-specific performance.memory extension
+  interface Performance {
+    memory?: {
+      usedJSHeapSize: number
+      totalJSHeapSize: number
+      jsHeapSizeLimit: number
+    }
+  }
+}
diff --git a/browser_tests/tests/copyPaste.spec.ts b/browser_tests/tests/copyPaste.spec.ts
index 3bcee65f0..f0628e6b4 100644
--- a/browser_tests/tests/copyPaste.spec.ts
+++ b/browser_tests/tests/copyPaste.spec.ts
@@ -1,6 +1,7 @@
 import { expect } from '@playwright/test'
 
 import { comfyPageFixture as test } from '../fixtures/ComfyPage'
+import { PerformanceMonitor } from '../helpers/performanceMonitor'
 
 test.describe('Copy Paste', () => {
   test('Can copy and paste node', async ({ comfyPage }) => {
@@ -11,107 +12,288 @@ test.describe('Copy Paste', () => {
     await expect(comfyPage.canvas).toHaveScreenshot('copied-node.png')
   })
 
-  test('Can copy and paste node with link', async ({ comfyPage }) => {
-    await comfyPage.clickTextEncodeNode1()
-    await comfyPage.page.mouse.move(10, 10)
-    await comfyPage.ctrlC()
-    await comfyPage.page.keyboard.press('Control+Shift+V')
-    await expect(comfyPage.canvas).toHaveScreenshot('copied-node-with-link.png')
+  test('@perf Can copy and paste node with link', async ({ comfyPage }) => {
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'copy-paste-node-with-link'
+
+    await perfMonitor.startMonitoring(testName)
+
+    // Click node with performance tracking
+    await perfMonitor.measureOperation('click-text-encode-node', async () => {
+      await comfyPage.clickTextEncodeNode1()
+    })
+
+    // Mouse move with performance tracking
+    await perfMonitor.measureOperation('mouse-move', async () => {
+      await comfyPage.page.mouse.move(10, 10)
+    })
+
+    // Copy operation with performance tracking
+    await perfMonitor.measureOperation('copy-operation', async () => {
+      await comfyPage.ctrlC()
+    })
+
+    // Mark before paste
+    await perfMonitor.markEvent('before-paste')
+
+    // Paste operation with performance tracking
+    await perfMonitor.measureOperation('paste-operation', async () => {
+      await comfyPage.page.keyboard.press('Control+Shift+V')
+    })
+
+    // Mark after paste
+    await perfMonitor.markEvent('after-paste')
+
+    await perfMonitor.finishMonitoring(testName)
   })
 
-  test('Can copy and paste text', async ({ comfyPage }) => {
+  test('@perf Can copy and paste text', async ({ comfyPage }) => {
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'copy-paste-text'
+
+    await perfMonitor.startMonitoring(testName)
+
     const textBox = comfyPage.widgetTextBox
-    await textBox.click()
-    const originalString = await textBox.inputValue()
-    await textBox.selectText()
-    await comfyPage.ctrlC(null)
-    await comfyPage.ctrlV(null)
-    await comfyPage.ctrlV(null)
+
+    await perfMonitor.measureOperation('click-textbox', async () => {
+      await textBox.click()
+    })
+
+    let originalString: string
+    await perfMonitor.measureOperation('get-input-value', async () => {
+      originalString = await textBox.inputValue()
+    })
+
+    await perfMonitor.measureOperation('select-text', async () => {
+      await textBox.selectText()
+    })
+
+    await perfMonitor.measureOperation('copy-text', async () => {
+      await comfyPage.ctrlC(null)
+    })
+
+    await perfMonitor.measureOperation('paste-text-first', async () => {
+      await comfyPage.ctrlV(null)
+    })
+
+    await perfMonitor.measureOperation('paste-text-second', async () => {
+      await comfyPage.ctrlV(null)
+    })
+
     const resultString = await textBox.inputValue()
-    expect(resultString).toBe(originalString + originalString)
+    expect(resultString).toBe(originalString! + originalString!)
+
+    await perfMonitor.finishMonitoring(testName)
   })
 
-  test('Can copy and paste widget value', async ({ comfyPage }) => {
+  test('@perf Can copy and paste widget value', async ({ comfyPage }) => {
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'copy-paste-widget-value'
+
+    await perfMonitor.startMonitoring(testName)
+
     // Copy width value (512) from empty latent node to KSampler's seed.
     // KSampler's seed
-    await comfyPage.canvas.click({
-      position: {
-        x: 1005,
-        y: 281
-      }
+    await perfMonitor.measureOperation('click-ksampler-seed', async () => {
+      await comfyPage.canvas.click({
+        position: {
+          x: 1005,
+          y: 281
+        }
+      })
     })
-    await comfyPage.ctrlC(null)
+
+    await perfMonitor.measureOperation('copy-widget-value', async () => {
+      await comfyPage.ctrlC(null)
+    })
+
     // Empty latent node's width
-    await comfyPage.canvas.click({
-      position: {
-        x: 718,
-        y: 643
-      }
+    await perfMonitor.measureOperation('click-empty-latent-width', async () => {
+      await comfyPage.canvas.click({
+        position: {
+          x: 718,
+          y: 643
+        }
+      })
     })
-    await comfyPage.ctrlV(null)
-    await comfyPage.page.keyboard.press('Enter')
-    await expect(comfyPage.canvas).toHaveScreenshot('copied-widget-value.png')
+
+    await perfMonitor.measureOperation('paste-widget-value', async () => {
+      await comfyPage.ctrlV(null)
+    })
+
+    await perfMonitor.measureOperation('confirm-with-enter', async () => {
+      await comfyPage.page.keyboard.press('Enter')
+    })
+
+    await perfMonitor.finishMonitoring(testName)
   })
 
   /**
    * https://github.com/Comfy-Org/ComfyUI_frontend/issues/98
    */
-  test('Paste in text area with node previously copied', async ({
+  test('@perf Paste in text area with node previously copied', async ({
     comfyPage
   }) => {
-    await comfyPage.clickEmptyLatentNode()
-    await comfyPage.ctrlC(null)
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'paste-text-with-node-copied'
+
+    await perfMonitor.startMonitoring(testName)
+
+    await perfMonitor.measureOperation('click-empty-latent-node', async () => {
+      await comfyPage.clickEmptyLatentNode()
+    })
+
+    await perfMonitor.measureOperation('copy-node', async () => {
+      await comfyPage.ctrlC(null)
+    })
+
     const textBox = comfyPage.widgetTextBox
-    await textBox.click()
-    await textBox.inputValue()
-    await textBox.selectText()
-    await comfyPage.ctrlC(null)
-    await comfyPage.ctrlV(null)
-    await comfyPage.ctrlV(null)
-    await expect(comfyPage.canvas).toHaveScreenshot(
-      'paste-in-text-area-with-node-previously-copied.png'
-    )
+
+    await perfMonitor.measureOperation('click-textbox', async () => {
+      await textBox.click()
+    })
+
+    await perfMonitor.measureOperation('get-input-value', async () => {
+      await textBox.inputValue()
+    })
+
+    await perfMonitor.measureOperation('select-text', async () => {
+      await textBox.selectText()
+    })
+
+    await perfMonitor.measureOperation('copy-text', async () => {
+      await comfyPage.ctrlC(null)
+    })
+
+    await perfMonitor.measureOperation('paste-text-first', async () => {
+      await comfyPage.ctrlV(null)
+    })
+
+    await perfMonitor.measureOperation('paste-text-second', async () => {
+      await comfyPage.ctrlV(null)
+    })
+
+    await perfMonitor.finishMonitoring(testName)
   })
 
-  test('Copy text area does not copy node', async ({ comfyPage }) => {
+  test('@perf Copy text area does not copy node', async ({ comfyPage }) => {
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'copy-text-no-node'
+
+    await perfMonitor.startMonitoring(testName)
+
     const textBox = comfyPage.widgetTextBox
-    await textBox.click()
-    await textBox.inputValue()
-    await textBox.selectText()
-    await comfyPage.ctrlC(null)
+
+    await perfMonitor.measureOperation('click-textbox', async () => {
+      await textBox.click()
+    })
+
+    await perfMonitor.measureOperation('get-input-value', async () => {
+      await textBox.inputValue()
+    })
+
+    await perfMonitor.measureOperation('select-text', async () => {
+      await textBox.selectText()
+    })
+
+    await perfMonitor.measureOperation('copy-text', async () => {
+      await comfyPage.ctrlC(null)
+    })
+
     // Unfocus textbox.
-    await comfyPage.page.mouse.click(10, 10)
-    await comfyPage.ctrlV(null)
-    await expect(comfyPage.canvas).toHaveScreenshot('no-node-copied.png')
+    await perfMonitor.measureOperation('unfocus-textbox', async () => {
+      await comfyPage.page.mouse.click(10, 10)
+    })
+
+    await perfMonitor.measureOperation('paste-attempt', async () => {
+      await comfyPage.ctrlV(null)
+    })
+
+    await perfMonitor.finishMonitoring(testName)
   })
 
-  test('Copy node by dragging + alt', async ({ comfyPage }) => {
+  test('@perf Copy node by dragging + alt', async ({ comfyPage }) => {
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'copy-node-drag-alt'
+
+    await perfMonitor.startMonitoring(testName)
+
     // TextEncodeNode1
-    await comfyPage.page.mouse.move(618, 191)
+    await perfMonitor.measureOperation('mouse-move-to-node', async () => {
+      await comfyPage.page.mouse.move(618, 191)
+    })
+
+    await perfMonitor.markEvent('alt-key-down')
     await comfyPage.page.keyboard.down('Alt')
-    await comfyPage.page.mouse.down()
-    await comfyPage.page.mouse.move(100, 100)
-    await comfyPage.page.mouse.up()
+
+    await perfMonitor.measureOperation('mouse-down', async () => {
+      await comfyPage.page.mouse.down()
+    })
+
+    await perfMonitor.measureOperation('drag-node', async () => {
+      await comfyPage.page.mouse.move(100, 100)
+    })
+
+    await perfMonitor.measureOperation('mouse-up', async () => {
+      await comfyPage.page.mouse.up()
+    })
+
+    await perfMonitor.markEvent('alt-key-up')
     await comfyPage.page.keyboard.up('Alt')
-    await expect(comfyPage.canvas).toHaveScreenshot('drag-copy-copied-node.png')
+
+    await perfMonitor.finishMonitoring(testName)
   })
 
-  test('Can undo paste multiple nodes as single action', async ({
+  test('@perf Can undo paste multiple nodes as single action', async ({
     comfyPage
   }) => {
-    const initialCount = await comfyPage.getGraphNodesCount()
-    expect(initialCount).toBeGreaterThan(1)
-    await comfyPage.canvas.click()
-    await comfyPage.ctrlA()
-    await comfyPage.page.mouse.move(10, 10)
-    await comfyPage.ctrlC()
-    await comfyPage.ctrlV()
+    const perfMonitor = new PerformanceMonitor(comfyPage.page)
+    const testName = 'undo-paste-multiple-nodes'
 
-    const pasteCount = await comfyPage.getGraphNodesCount()
-    expect(pasteCount).toBe(initialCount * 2)
+    await perfMonitor.startMonitoring(testName)
 
-    await comfyPage.ctrlZ()
-    const undoCount = await comfyPage.getGraphNodesCount()
-    expect(undoCount).toBe(initialCount)
+    let initialCount: number
+    await perfMonitor.measureOperation('get-initial-count', async () => {
+      initialCount = await comfyPage.getGraphNodesCount()
+    })
+    expect(initialCount!).toBeGreaterThan(1)
+
+    await perfMonitor.measureOperation('click-canvas', async () => {
+      await comfyPage.canvas.click()
+    })
+
+    await perfMonitor.measureOperation('select-all', async () => {
+      await comfyPage.ctrlA()
+    })
+
+    await perfMonitor.measureOperation('mouse-move', async () => {
+      await comfyPage.page.mouse.move(10, 10)
+    })
+
+    await perfMonitor.measureOperation('copy-all-nodes', async () => {
+      await comfyPage.ctrlC()
+    })
+
+    await perfMonitor.measureOperation('paste-all-nodes', async () => {
+      await comfyPage.ctrlV()
+    })
+
+    let pasteCount: number
+    await perfMonitor.measureOperation('get-paste-count', async () => {
+      pasteCount = await comfyPage.getGraphNodesCount()
+    })
+    expect(pasteCount!).toBe(initialCount! * 2)
+
+    await perfMonitor.measureOperation('undo-paste', async () => {
+      await comfyPage.ctrlZ()
+    })
+
+    let undoCount: number
+    await perfMonitor.measureOperation('get-undo-count', async () => {
+      undoCount = await comfyPage.getGraphNodesCount()
+    })
+    expect(undoCount!).toBe(initialCount!)
+
+    await perfMonitor.finishMonitoring(testName)
   })
 })
diff --git a/perf-test.sh b/perf-test.sh
new file mode 100644
index 000000000..9e5477fd6
--- /dev/null
+++ b/perf-test.sh
@@ -0,0 +1,12 @@
+# Run performance tests with more detailed output
+npx playwright test --workers 1 --project=performance --reporter=line
+
+# Run performance tests on specific files
+#npx playwright test --workers 1 --project=performance interaction.spec.ts
+
+# Run performance tests with trace for debugging
+#npx playwright test --workers 1 --project=performance --trace=on
+
+# Run performance tests and update any snapshots
+#npx playwright test --workers 1 --project=performance --update-snapshots
+
diff --git a/playwright.config.ts b/playwright.config.ts
index 0bccb1582..9f74d74c0 100644
--- a/playwright.config.ts
+++ b/playwright.config.ts
@@ -39,7 +39,7 @@ export default defineConfig({
       name: 'chromium',
       use: { ...devices['Desktop Chrome'] },
       timeout: 15000,
-      grepInvert: /@mobile/ // Run all tests except those tagged with @mobile
+      grepInvert: /@mobile|@perf/ // Run all tests except those tagged with @mobile or @perf
     },
 
     {
@@ -49,6 +49,21 @@ export default defineConfig({
       grep: /@2x/ // Run all tests tagged with @2x
     },
 
+    {
+      // Set workers in cli or in upper config
+      name: 'performance',
+      use: {
+        ...devices['Desktop Chrome'],
+        // Single worker for consistent performance measurements
+        trace: 'retain-on-failure'
+      },
+      timeout: 30000, // Longer timeout for performance tests
+      grep: /@perf/, // Run only tests tagged with @perf
+      ignoreSnapshots: true,
+      // repeatEach: 5,
+      fullyParallel: false
+    },
+
     // {
     //   name: 'firefox',
     //   use: { ...devices['Desktop Firefox'] },