@soulburner In your case, are you running with vsync on?[/QUOTE] It doesn't matter, I got this no matter if vsync is on or off. But later I realized my problem was the display was duplicating to the TV. And disabling cloning fixed that issue. Strangely, enabling it back again didn't get the bug back... Anyway, I still know that some of our player experience a terrible stutter and can't reproduce/fix it.