Hi. I have always used v sync on with RTSS limit at 141 FPS. Never had any issues with RTX 2080, always I achieved either 141 FPS or 99% GPU utilization. On RTX 3080 turning V sync off doesn't have any impact because I am already limited before I even reach the refresh rate of my monitor at 144 Hz. But this limit appears to be at around 60-80% GPU utilization for some strange reason.