According to the archlinux wiki:

“If you are trying to run a native game using Proton but get a Steam compatibility tool error immediately after starting the game, you might have to reinstall the runtime.

1. Navigate to your Steam library.
2. In the dropdown above your game list check the Tools option to make them visible.
3. Search for Proton, right click on each installed tool, visit Properties, open the Local files tab and click Verify integrity of tool files for each entry.
4. Search for Steam Linux Runtime and repeat the same procedure. If none are available, install the latest Steam Linux Runtime - Soldier.”

Link: https://wiki.archlinux.org/title/Steam/Troubleshooting

My biggest worry around Linux gaming right now, even with all the progress we’ve seen, is that Steam is basically becoming Linux gaming, and it is, after all, proprietary. I don’t love our ability to play games moving heavily into the hands of one, ultimately pretty greedy, private company. Sadly companies like that really want control, and that will always include the bloat they deem “necessary.”

And notifications! I’ve been waiting for them since forever, I really dislike how Steam is the only program I use that does its own thing with notifications, they always appear on top (sometimes with broken animations) and don’t respect the do-not-disturb setting.

That was literally my first day experience with new Steam client. :)

I enabled hardware acceleration and it ended up using all of the GPU memory in a relatively short time.