Registered Lua callbacks via gui.register() are now only called at frame boundaries.

src/fceu.cpp

@@ -731,6 +731,8 @@ void FCEUI_Emulate(uint8 **pXBuf, int32 **SoundBuf, int32 *SoundBufSize, int ski
 	CallRegisteredLuaFunctions(LUACALL_AFTEREMULATION);
 #endif
 
+	FCEU_PutImage();
+
 #ifdef WIN32
 	//These Windows only dialogs need to be updated only once per frame so they are included here
 	UpdateCheatList(); // CaH4e3: can't see why, this is only cause problems with selection - adelikat: selection is only a problem when not paused, it shoudl be paused to select, we want to see the values update

src/ppu.cpp

@@ -1862,7 +1862,6 @@ int FCEUPPU_Loop(int skip) {
 	} else
 	#endif
 	{
-		FCEU_PutImage();
 		return(1);
 	}
 }
@@ -2429,7 +2428,5 @@ int FCEUX_PPU_Loop(int skip) {
 	}
 
 finish:
-	FCEU_PutImage();
-
 	return 0;
 }