diff --git a/chip/ps4_videodrv.pas b/chip/ps4_videodrv.pas
index 835fb8b1..4d915a56 100644
--- a/chip/ps4_videodrv.pas
+++ b/chip/ps4_videodrv.pas
@@ -69,6 +69,8 @@ const
 
 procedure vSubmitDone;
 
+function  vSubmitsAllowed:Boolean;
+
 var
  DEPTH_DISABLE_HACK:Boolean=false;
  COMPUTE_DISABLE_HACK:Boolean=false;
@@ -164,6 +166,9 @@ var
 
  FIdleEvent:PRTLEvent=nil;
 
+ FSubmitEvent:PRTLEvent=nil;
+ FSubmitAllowed:DWORD=0;
+
  GPU_REGS:TGPU_REGS;
 
  FCmdPool:TvCmdPool;
@@ -420,10 +425,10 @@ begin
   begin
    if me_node_test(GFXMicroEngine.Current) then
    begin
-    if (GFXMicroEngine.Current^.mode=metCmdBuffer) then
-    begin
-     RTLEventSetEvent(FIdleEvent);
-    end;
+    //if (GFXMicroEngine.Current^.mode=metCmdBuffer) then
+    //begin
+    // RTLEventSetEvent(FIdleEvent);
+    //end;
    end else
    begin
     time:=-100000;
@@ -462,6 +467,9 @@ begin
   FIdleEvent:=RTLEventCreate;
   RTLEventSetEvent(FIdleEvent);
 
+  FSubmitEvent:=RTLEventCreate;
+  RTLEventSetEvent(FSubmitEvent);
+
   t:=BeginThread(@GFX_thread);
 
   _gfx_handle:=t;
@@ -607,14 +615,25 @@ end;
 
 procedure vSubmitDone;
 begin
- if (FIdleEvent<>nil) then
+ if (FIdleEvent<>nil) and (FSubmitEvent<>nil) then
  begin
-  RTLEventWaitFor(FIdleEvent);
+  While not CAS(FSubmitAllowed,0,1) do
+  begin
+   RTLEventWaitFor(FSubmitEvent); //wait another vSubmitDone
+  end;
+  RTLEventResetEvent(FSubmitEvent);
+
+  RTLEventWaitFor(FIdleEvent,2000);      //wait idle GPU
+
+  RTLEventSetEvent(FSubmitEvent);
+  store_release(FSubmitAllowed,0);
  end;
- //Sleep(100);
- //Device.WaitIdle;
 end;
 
+function vSubmitsAllowed:Boolean;
+begin
+ Result:=FSubmitAllowed=0;
+end;
 
 procedure onPrepareFlip();
 begin
diff --git a/fpPS4.lpi b/fpPS4.lpi
index 3796b439..a8d60ee4 100644
--- a/fpPS4.lpi
+++ b/fpPS4.lpi
@@ -302,6 +302,7 @@
       <Unit66>
         <Filename Value="src\ps4_libscediscmap.pas"/>
         <IsPartOfProject Value="True"/>
+        <UnitName Value="ps4_libSceDiscMap"/>
       </Unit66>
       <Unit67>
         <Filename Value="src\ps4_libscegnmdriver.pas"/>
@@ -316,6 +317,7 @@
       <Unit69>
         <Filename Value="src\ps4_libsceime.pas"/>
         <IsPartOfProject Value="True"/>
+        <UnitName Value="ps4_libSceIme"/>
       </Unit69>
       <Unit70>
         <Filename Value="src\ps4_libscemouse.pas"/>
diff --git a/src/ps4_libscegnmdriver.pas b/src/ps4_libscegnmdriver.pas
index 22abd641..caa187c5 100644
--- a/src/ps4_libscegnmdriver.pas
+++ b/src/ps4_libscegnmdriver.pas
@@ -1300,6 +1300,9 @@ end;
 
 //
 
+var
+ SceSubmitDoneGame:TRTLCriticalSection;
+
 function ps4_sceGnmSubmitCommandBuffersForWorkload(
           workload:QWORD;
           count:DWORD;
@@ -1322,7 +1325,11 @@ begin
  Submit.ccbSizesInBytes:=ccbSizesInBytes;
 
  _sig_lock;
+ EnterCriticalSection(SceSubmitDoneGame);
+
  Result:=vSubmitCommandBuffers(@Submit,nil);
+
+ LeaveCriticalSection(SceSubmitDoneGame);
  _sig_unlock;
 
  Result:=0;
@@ -1380,7 +1387,11 @@ begin
  Flip.flipArg    :=flipArg;
 
  _sig_lock;
+ EnterCriticalSection(SceSubmitDoneGame);
+
  Result:=vSubmitCommandBuffers(@Submit,@Flip);
+
+ LeaveCriticalSection(SceSubmitDoneGame);
  _sig_unlock;
 
  Result:=0;
@@ -1449,8 +1460,12 @@ begin
  Flip.flipArg    :=flipArg;
 
  _sig_lock;
+ EnterCriticalSection(SceSubmitDoneGame);
+
  Result:=vSubmitCommandBuffers(@Submit,@Flip);
  vSubmitDone;
+
+ LeaveCriticalSection(SceSubmitDoneGame);
  _sig_unlock;
 
  Result:=0;
@@ -1482,7 +1497,11 @@ begin
  //exit(0);
 
  _sig_lock;
+ EnterCriticalSection(SceSubmitDoneGame);
+
  vSubmitDone;
+
+ LeaveCriticalSection(SceSubmitDoneGame);
  _sig_unlock;
 
  Result:=0;
@@ -1512,7 +1531,7 @@ end;
 //A value of true is returned if submit/dingdong is allowed; otherwise false is returned.
 function ps4_sceGnmAreSubmitsAllowed:Boolean; SysV_ABI_CDecl;
 begin
- Result:=true;
+ Result:=vSubmitsAllowed;
 end;
 
 const
@@ -1742,6 +1761,8 @@ end;
 initialization
  GnmInitEmbedded;
 
+ InitCriticalSection(SceSubmitDoneGame);
+
  EopEvents.Init;
  ComputeEvents[0].Init;
  ComputeEvents[1].Init;
diff --git a/src/ps4_libsceime.pas b/src/ps4_libsceime.pas
index 341370f3..475b7291 100644
--- a/src/ps4_libsceime.pas
+++ b/src/ps4_libsceime.pas
@@ -11,11 +11,30 @@ uses
 
 implementation
 
+type
+ pSceImeEvent=^SceImeEvent;
+ SceImeEvent=packed record
+  id:Integer; //SceImeEventId
+  //param:SceImeEventParam;
+ end;
+
+ SceImeEventHandler=procedure(arg:Pointer;e:pSceImeEvent);
+
+ pSceImeKeyboardParam=^SceImeKeyboardParam;
+ SceImeKeyboardParam=packed record
+  option:DWORD;
+  reserved1:DWORD;
+  arg:Pointer;
+  handler:SceImeEventHandler;
+  reserved2:QWORD;
+ end;
+
 function ps4_sceImeKeyboardOpen(
           userId:Integer;
-          param:Pointer //SceImeKeyboardParam
+          param:pSceImeKeyboardParam
           ):Integer; SysV_ABI_CDecl;
 begin
+ Writeln('sceImeKeyboardOpen:',userId,' ',HexStr(param));
  Result:=Integer($80BC0004);
 end;
 
@@ -23,6 +42,7 @@ function ps4_sceImeUpdate(
           handler:Pointer //SceImeEventHandler
           ):Integer; SysV_ABI_CDecl;
 begin
+ Writeln('sceImeUpdate:',HexStr(handler));
  Result:=Integer($80BC0004);
 end;