diff --git a/driver/device_implicit_gemm_convolution_2_chwn_cyxk_khwn.hpp b/driver/device_implicit_gemm_convolution_2_chwn_cyxk_khwn.hpp
index a773a078e4..497aa3e9c1 100644
--- a/driver/device_implicit_gemm_convolution_2_chwn_cyxk_khwn.hpp
+++ b/driver/device_implicit_gemm_convolution_2_chwn_cyxk_khwn.hpp
@@ -190,8 +190,8 @@ void device_implicit_gemm_convolution_2_chwn_cyxk_khwn(InDesc,
     constexpr index_t WeiBlockCopyDataPerRead = 4;
 
     constexpr index_t BlockSize = 256;
-#elif 0
-    // 1x1, 14x14, Vega 20
+#elif 1
+    // 1x1, 14x14, Vega 20, disable lds_double_buffer, enable register double buffer
     constexpr index_t BPerBlock = 64;
     constexpr index_t KPerBlock = 128;
     constexpr index_t CPerBlock = 8;
@@ -220,7 +220,7 @@ void device_implicit_gemm_convolution_2_chwn_cyxk_khwn(InDesc,
     constexpr index_t WeiBlockCopyDataPerRead = 4;
 
     constexpr index_t BlockSize = 128;
-#elif 1
+#elif 0
     // 1x1, 14x14, Vega 20, hack CPerBlock = 1
     constexpr index_t BPerBlock = 64;
     constexpr index_t KPerBlock = 128;