It's pretty good with adaptive sync and nVidia Reflex otherwise it's terrible. Reflex seems to work on linux too so I guess single player linux gamers will be happy.

Useless blabbering incoming: With that said I am a proud frame generation hater. On its own it effectively halves your frame rate even though the frame counter will say that it doubled it. With Reflex the latency is not "that bad" but still I don't get why anyone would want that. The reason I want more frames is better responsiveness. I cannot really tell the difference between 60 Hz and 120 Hz video. I've seen Avatar 2 at high refresh and did not really notice anything (other than that the movie sucked). But I can tell that my mouse feels like it's sliding on jelly.

Obviously it's great for the people that like it. I won't be like the wayland dev who blocked the tearing protocol (aka. just allowing frames to show on screen as soon as they are created) because they did not use it.