I´ve been playing everything with Pitool 1.5, 2100pix Vertical (44/45% Steam) since last year, which gives my system the best ratio of performance to sharpness. I tried everything before. Not interested in experiments. I think it depends a lot on your own system (7700k @ 5GHz, 2080ti 330W Bios @ 2000/7600, 32Gb @ 2800, 8k and 8k+)
The winner is XP / OpenGL - the best pitool for XP I’ve ever seen