Launching any game on Steam is very slow and laggy and ultimately I dont get past the initial selection screen of any game. The screen will be crazily zoomed in in most cases too.
One thing I have noticed is that in the resolution is NEVER correct for my display in nvidia settings. I will attach screenshots.
Things ive tried (knowing nothing at all about Linux 
I have 3 displays, I have disabled all but one.
I have disabled secure boot.
I have changed the resolution settings in nvidia but they will revert again
I have tried a few different versions of Proton in Steam settings.
I have ran Steam from terminal
Anyway I have given up trying to figure this out myself but I do think its something to do with the nvidia driver for sure.
Any help would be greatly appreciated
It's sad, I was really anticipating SubNautica 2...
You have RTX 3080 card - which driver are you using?
Are you on Wayland or Xorg?
1 Like
Im on Xorg. Driver Version: 580.95.05
I had the idea to look for some games with full native Linux support.This is what happened with the ones I played so far:
Valheim - runs at about 40fps and its extremely laggy, much worse than it should be at 40fps.
Stardew valley worked fine at 60fps.
Slay the Spire - runs fine but wont go full screen
The Long Dark - runs at 4fps
Dota is downloading.
I have both of these titles and I am a Massive Builder in Valheim. And I have good FPS and rendering - Nvidia RTX3060 on current 580 driver.
I have both set to Proton Experimental.
I installed Zorin on my laptop the day before my PC and games work fine on it - without me doing anything to make them work 
Have you switched which ports your cables are plugged into on the back of the PC or checked the cables are rated for modern systems?
Yeah theyre fine. I have dual boot windows atm and the games are all fine on windows. Im only dipping my toe into Linux and was very surprised at how well everything worked up until I tested some games.
Have you checked Prime Select - maybe are not using your Nvidia Card?
Hmmm that returns "On demand"
I typed sudo prime-select nvidia, and got Error: no integrated GPU detected." back
Ah, so you do not have an Intel motherboard graphics card?
After a bit of googling my cpu, or motherboard dont have integrated graphics.
Also I tried a few more versions of proton with Valheim with no luck
It sounds like only the Unity games are affected.
I will try a unreal engine game
Ok its fixed now hurrah! I changed over to wayland at the login screen and tried Subnautica again and the game loaded find, went straight to the menu, the menu wasnt out of focus or anything, started the game and it was steady 120fps.
Same for the long dark 120fps. Tried a few other games and they all ran great. The only one that had random stutters was Overwatch 2.
The nvidia driver settings now dont have all those super annoying settings, like viewportin, panning etc.
Also the 3 displays are set up now without issues so far.
The display settings kept changing themselves before, the refresh rate and the resolution. That doesnt appear to be happening now.
Thanks for the help and suggestions because I wouldnt have got that sorted otherwise!
What is most interesting to me is that on XFCE, it is the other way around.
Because on XFCE, you cannot use Wayland. So... it works.
But Gnome sliced up Mutter so that Wayland would work, but Xorg won't.
Cheap shot.
Reading about this in two different threads has me muttering a few choice phrases myself...
Dude, I love Subnautica, what a great adventure game! You got to have a beefy computer, to get 120-FPS out of it though. Just a quick FYI, due to the limitations of the original engine used, the more you build in that game, the larger the save file gets, the more the FPS will drop. So, be careful with not over building.
I'm sure the Unreal 5 engine would have solved all of that, if the latest game were allowed to come to fruition, but thats all in limbo right now. BTW, don't forget to also try Subnautica Bellow Zero. Some liked it, some didn't, I enjoyed it, even though my nose was freezing like an ice cube, burrr lol.
On many occasions, I have utterly ignored this advice.
My man, I got a high performance PC, I could get away with going bigger then the world has ever seen. LOL!
The advice was for folks who have mid-range PC's, or older PC's, with limited hardware.
Yeah its an amazing and beautiful game for sure. The next game is supposed to have multiplayer which would be really amazing.
Im not a fan of the Unreal engine or Epic really and the game looked amazing on Unity anyway, but im sure they have their reasons for moving, the building thing could be one of them for sure. Though Subnautica 1 has been on the go for 10 years now so maybe Unity has also changed during that time. I dont know.
