diff --git a/amp_wrapper.h b/amp_wrapper.h
index d3c34e8..72b2c41 100644
--- a/amp_wrapper.h
+++ b/amp_wrapper.h
@@ -19,7 +19,7 @@
 #define AREN_OUTPUT_PORT_NUM   1
 #define AREN_OUTPUT_PORT_NUM_PASS 3
 
-#define MAX_BUF_NUM      (347)
+#define MAX_BUF_NUM      (30)
 #define MAX_BUF_SIZE     (188 * 128)
 #define WRAP_UP(a, b)    (((a) + (b) - 1) / (b) * (b))
 #define BUF_ACTURAL_SIZE (MAX_BUF_SIZE * MAX_BUF_NUM)

diff --git a/amp/src/service/display/src/disp_api.c b/amp/src/service/display/src/disp_api.c
index 8481b1f..bebb113 100755
--- a/amp/src/service/display/src/disp_api.c
+++ b/amp/src/service/display/src/disp_api.c
@@ -3697,7 +3697,7 @@ HRESULT DISP_OUT_SetResolution(AMP_DISP_TG_ID uiTgId,
         (ResId & 0x80000000)) {
 
             DISP_OUT_SetMute(AMP_DISP_OUT_HDMI, 1);
-            MV_OSAL_Task_Sleep(100);
+            // MV_OSAL_Task_Sleep(100);
             gDispModule->bMuteStatus = TRUE;
 
 #ifdef ENABLE_FRAME_RATE_CONVERSION_FOR_VPP_TG_SYNC
@@ -4143,7 +4143,7 @@ HRESULT DISP_OUT_HDMI_SetVidFmt(INT32 iHdmiColorFmt,
 
         if(gDispModule->bMuteStatus == FALSE) {
             DISP_OUT_SetMute(AMP_DISP_OUT_HDMI, 1);
-            MV_OSAL_Task_Sleep(100);
+            // MV_OSAL_Task_Sleep(100);
             gDispModule->bMuteStatus = TRUE;
         }
         Ret = MV_VPPOBJ_SetHdmiVideoFmt(gDispModule->iVppHandle,