I've used the official nVidia drivers, they definitely don't work well compared to AMD/Intel on Linux. They're usable and more or less stable, but on my computer I was seeing stuff like window contents freezing, graphics stuttering, screen tearing on video playback, the mouse cursor lagging when there was high CPU usage, etc. and it all went away when I switched to an AMD card. Everyone I've talked to has has the same experience: weird performance hiccups or glitches that go away as soon as you stop using nVidia.