I'm enjoying it a lot. Performance is fine, not great (mid/high on 2070 Super at 1440p), getting about 60 FPS. I could probably improve this with the right settings.
It's been very stable for me, 6 hours in and the only bugs I've seen are minor graphic glitches like momentarily weird animation. No broken quests, no reloads required except on death, no game crashes. From my own experience so far, this is launch quality.