I had that issue as well with a USB hub that has charging. Turns out it was the hub that was the issue because it would throttle or even shut off the charging to other usb ports when there’s too high of a demand to prevent it from overheating. Swapped to a better usb hub and had no issues since.

With the release of the steam deck Linux gaming has gotten a lot better and more support since their steam OS is a branch of Debian. A lot of games now support Linux gaming more than before.