
Havent tried multiplayer yet, but it runs just like it would on windows.

default proton version did not work, needed to use the GE version
The game works flawlessly out of the box, no configuration required.

gamemoderun %command%
- No difference when compared to Windows
I'll add just in case: problems with audio most probably aren't related to Linux. My friends with Windows have more audio problems than I.

Fun game. Needs more work from the developers but works similar to Windows.
Not sure if this was a Linux issue or a game issue, a Windows friend had similar issues.
Brilliant cross platform performace.
Fun game. Needs more work from the developers but performs similar to Windows. Let them cook.

When asked if you want to play Ground Branch or DX12, do not use DX12

Pleasant experience so far
It's a smoothsailing overall. Workshop mods are all working. Apart from a stutter during first shot at live firing range and training area that don't happen again afterwards. Playing this in Wayland with the new post v555 NVIDIA driver and I'm not having any issues or inconveniences related to it.
mangohud gamemoderun %command%

One of the best out of the box experiences so far
The game window freezes when connecting to a server and pop-up might be shown. The game still connects to the server and shows the briefing room after up to 30 seconds.
The game is still in Early Access and I played the community branch most of the time. I had no technical issues so far and performance is descent on dx11.

Game's plays fine generally
Just a reset in IGN, but all previous saved settings, saved weapons are still there
I notice some significant jitter when using 3x magnification and in move. Also slight stutter in some areas (i.e in the briefing rooms or indoor areas).
gamemoderun mangohud %command%

I had issues with OpenSuse playing this game, but Rocky seems stable using flatpak to install steam.
I cannot believe online gameplay works this well for this game!
Installed rocky linux 9.2 with Gnome, installed steam via flatpak, installed groundbranch, and played for four hours until my wife made me turn it off. Everything worked perfectly, even my mic. I did experience some lagging with multiple people playing but that is likely a limitation of my potatoe of a computer. Would love to test with a much more powerful machine/gpu/cpu. XFX Radeon 6500XT plays the game at 40ish fps with all graphics settings turned down to low.

gamemoderun mangohud %command% -dx12
vulkan-radeon
驱动有显著的性能问题,尤其是设置 Character Shadows 为 Full 的时候,室内帧数较低(40--70 fps)且并不稳定,开镜时性能进一步降低;比如在开始游戏前的准备房间的靶场区域时,这种性能上的问题非常明显(怀疑是室内光源较多的原因),但如果在主界面打开 TRAINING 这张地图则性能似乎又是正常的(~100+ fps)
另一方面,使用 amdvlk
这个驱动的话,则性能有显著提升,与 windows 下性能表现相当,然而,有频繁的顿卡情况(其实 windows 上的卡顿情况也比较严重),并且某些地图区域的贴图有显示错误(贴图显示错误在使用 amdvlk
跑 insurgency sandstorm 时更突出,但使用 vulkan-radeon
跑 insurgency sandstorm 却没有 ground branch 这样的性能问题,尽管都是虚幻4引擎的游戏)
Alright.

This game is FUN but has its issues on proton a native port would be nice
Lights turning off and on depending on how close you are (NOT VIEW DISTANCE)
Alt Tabbing crashes the game sometimes
alot of stuttering in the lone wolf missions and multiplayer (100% pre-loaded vulkan shaders)
stuttering and lower performance (40 fps from 60 fps compared to single player)
stuttering but pretty playable
Stuttering here and there (40 - 60 fps max settings SSGI enabled) but it ran faster than it did when I was on Windows 10 which is a bonus

After playing for 5 mins, game runs perfect. Starting fps was 35-50, but after walking around for a bit it goes up to 120+ consistently.
Proton Experimental, Game needs to render graphics before it runs smoothly (one raid will easily fix it and it fixes very quickly). Game has no bugs, no downgrades, even ran it on Epic compared to windows where I run it Med and I got better performance still. Tweaks shouldn't be needed, Steams Proton works fine. Launch options are optional but not needed for Bug fixes. Don't get thrashed by the Low fps when you boot the game, just play for a bit and I promise it goes up as long as your hardware meets the recommended specs for the game.
I've had the chance to play it on windows and for me it was better on linux. On maxed grafic settings with something like 120 FPS
massive slow down with windowed and borderless from 35 to 15 average
crashes after switching guns 4-5 times over a play through
aside from overall stability the mp was about the same as windows
Works out of box
Max settings (anti aliasing disabled), No DLSS, around 150 fps depends on map
While the game does have worse performance, I enjoy it just fine. I'd rather run it directly on linux than boot a virtual machine.
gamemoderun obs-gamecapture mangohud %command%
Compared to a Windows Virtual Machine (VFIO), I get ~60 FPS compared to ~120 FPS. However, with motion blur (? I think so), even with a 144hz monitor it is not very noticable.
EXTREMELY STUTTERY GOES FROM ~150 FPS to ~72 FPS

Works great apart from multiplayer.
When switching window and then back the game is stretched.
Instant crash when accepting invites.
It ran surprisingly well, though you may need to configure the controls a bit
Text is very small, but readable
i ony made a 5 min test in the training facility, because the texts were very hard to read for me
Some stuttering here and there
Load times can be fairly long the first go. I haven't played this on Windows, so this could just be the game being in pre-alpha.
Very occasional crashes. After about 12 hours in the game, I think I've had maybe 2 or 3.
PROTON_LOG=1 WINEPREFIX=~/.local/share/wineprefixes/wine32-pre/ %command% -autoconfig
Had to disconnect second display to run game
Works as intended
No Issues
A game works "out of the box". Performance similar to that on Windows.
Small problem with some of the shadows. Not affecting gameplay.
Works without any problems
Runs perfectly well.
Cursor is prevented from leaving the window in i3-gaps.
The game may not completely kill itself upon "exit to desktop" or has a delayed effect at the very least.