Can't you put a rate limit on the frames? Or does that not help?
With high FPS your probably not going to see the screen tearing for a start at very slightly.
Put the refresh rate at 60 hz and try to disable vsync see if there an improvement then do it back at 75 hz if there is no change it probably due to an option somehere in the Nvidia panel.
It would be better to ask /wsr/ or a tech support IRC group, since this site has low traffic and it’s a specialized question.
I try capping fps below refresh rate but still no screen tearing
I tried uninstalling drivers it works but then no screen tearing after closing it off after a day