>>106259178
I've a legacy NVIDIA control panel. The only thing it has is VSync which I've always kept at "adaptive".

If you meant Windows "Game mode" I've never even heard of it before, but it is OFF. In Windows "Graphic Settings"
"hardware-accelerated GPU scheduling" is ON.
"graphics performance preference" is set to "Desktop app" which I think means non-DCH NVIDIA Control panel that I have installed.