Recently I was using the pitool catalyst setting at 10 in DCS.
For it to work I tuned DCS settings that the FPS was stable at half framerate with smart smoothing on while not exceeding 90% gpu usage.
If I could maintain that then the experience was very good and smooth.
However if the framrate dipped below half framerate then very bad double vision stuttering occured.
If the gpu utilization fell below ~50% then pitool tried to switch off smart smoothing, again stuttering.
If I switched off smart smoothing manually, fps increased, gpu utilization went up near 100%, but again stuttering and excessive lag.
Then I read about the new Windows 10 2004 feature “Hardware Accelerated GPU Scheduling” (HAGS) and the new Nvidia driver that supports that.
Installed the 2004 update, nvidia driver 451.48, pitool 261.
I switched HAGS on, rebooted.
Switched off smart smoothing, to try to cause stuttering immidiately.
The result: High GPU usage (up to 98%), higher framrates and almost completely eliminated the stuttering and lag for me while using catalyst at 10.
Still needs more testing but that is very encouraging.
The system used was i9900k CPU at 5.1Ghz, RTX 2080ti at 2Ghz and a 202 serial 5k+.