I got this Beelink mini pc from Amazon planning to hook it up to my living room TV and play movies and stream TV with. And I was shocked and amazed to discover that this little thing could run games like Hi-Fi Rush and MGSV:PP on max settings! Sure the fans made it sound like a small jet engine, but it never skipped frames or lagged on me even once! I know it's not a power house: it couldn't run Yakuza Zero or Neir Automata very well. But I was still thrilled with what it could do!
Well it shipped with Windows 11, and I finally decided to fix that. A couple days ago I switched over to Mint, tho I'm running Kubuntu now. The switch was quick and painless, and honestly getting used to Linux has been pretty fun! But now it runs a lot of my games like a slide show. I've been digging at this for a few days now, updating drivers and setting up Proton. I've found a lot of helpful guides and stuff on line, but very little about the hardware I have in this situation. Apparently AMD processors are great for Linux, but I feel like it's not working with the integrated graphics card. Tried to find the right driver on their website, but I haven't had much luck. So, here's hoping the community can help. Any tips for a newbie?
CPU: AMD Ryzen 7 5700U (16) @ 4.37 GHz | GPU: AMD Lucienne [Integrated]
UPDATE:
Thanks again to everyone so far that's offered advice, but it hasn't seemed to have helped much..
I made sure the power mode is set to Performance, and turned the settings all the way to their lowest at 1080p. Someone had suggested using Flatseal to check permissions, but steam did not show up there, so it was seemingly a dead end. I even switched to Bazzite.
But I'm still only getting 10fps at most, regardless of graphic settings. I'm not really sure what else to do at this point.
2nd UPDATE:
Potential success! BananaTrifleViolin asked if the games were running in 4k, which I made sure they weren't. But then I got to thinking about my main desktop display. It defaulted to my TV's 4k size, and the game was running in full screen...
So I fixed that and launched Hi-Fi again to test, and managed to get a stable 30fps! Now to figure out how to make this better, lol

There have been issues with the default power profiles interface and the AMD P-state manager for many KDE 6 versions depending on the kernel versions (I think 6.9+). THEN the power-profiles-daemon project was archived without notice, so I believe that's why they disabled/removed the quick menu for it for awhile, but since I believed they moved to the upower managed project and put it back in. Been a bit since I've used KDE, so unsure of the eventually fixed it.
Been using KDE 6 on this device since last year without issue. The power profiles are present in the system tray and slider in the quick menu, so whatever that issue it's been fixed. I've been using Nobara and OpenSuSE but maybe it's an issue on LTS releases if they're on a point release where this was an issue?
The power setting is a very good shout though - KDE defaulted to Balanced setting for me and I needed to change to Performance to get good gaming experiences.