Yeah, building a new PC without NVIDIA or at least swapping your GPU really is the best solution. The past two years I've run an Intel Arc A770 which was rough at first because the drivers were brand new but has been solid for over a year now and then in February or so I upgraded to an AMD Radeon RX 7800XT which has been absolutely amazing with my 4K 144Hz display. My setup before that was a 1080Ti and it was never an enjoyable experience on Linux and I usually gamed on Win10 on it. I haven't really touched Windows other than a small handful of times on the A770 or 7800XT as Linux runs great on them.