I've used the official Nvidia drivers on Linux for 5 years now and had excellent performance and few or no graphical glitches, with most issues coming early on. None within the last 2 years. Never experienced high CPU or freezing.
My cards have been a 2080, 3070 Ti, 4070M, and 4090. I could barely get an AMD card (6600 or something?) to work.
Now you have talked to someone who has not had that experience. And everyone I have talked to says they have had an experience either like mine, or like mine minus issues with AMD.
Performance is good but there are a few caveats. Namely dx12 perf (identified and being worked on), vram limit stutter (doesn't page to system memory well), HDR enabling requiring basically a hack because Nvidia doesn't want to implement color managent wayland uses, and some other annoyances.
My cards have been a 2080, 3070 Ti, 4070M, and 4090. I could barely get an AMD card (6600 or something?) to work.
Now you have talked to someone who has not had that experience. And everyone I have talked to says they have had an experience either like mine, or like mine minus issues with AMD.