All I have to say is, when I watch porn with the nouveau drivers, every 6-7 minutes my computer completely freezes, its so bad I have to do a hard reboot
After I install the nvidia drivers, I have hair on my palm and am happy.
In all seriousness the nouveau drivers have come a long way, they don't lock up my computer anymore (good for at least a week, longest I tested recently, yes, the lockup was bad when it happened)
but, for gaming, your all out of your minds
Even very old games like half-life2 suck using nouveau, I have tried it and three of my grandkids, ages, 16, 18, 20 (next month), theirs just such a huge difference, although they prefer windows or xbox, playstation for games, they get linux when they visit me and they don't mind