Sorry for the super late ping, but if they run under linux at all then it might be a distro issue. You should try out Bazzite. Hell, you should install it on your deck too. It’s designed to basically be SteamOS++ and has deck/handheld, as well as Desktop images. I run it on my Lenovo Legion Go and everything just works, as if it were a deck honestly. I have it on my desktop with an Nvidia GPU too, and it games great, at least anything that will play on Linux. It’s atomic, similar to an immutable distro, so it’s also never broken to the point of unplayable. If something isn’t working after an update, you can reboot and choose the older, working image instead.