"Oh what's that? Guilded's flatpak points to the official download URL, so any time Guilded itself updates the Linux download the flatpak breaks because the file size doesn't match? And for some reason they only provide a .deb package for the Linux download? EZPZ."
I have a suspicion that the pre-loaded flatpaks in the installer is failing if your selected language isn't English or it fails for some languages. Not sure if that is the issue though. Try English US when installing and see if that works.
Had an error prompt complaining about 'corrupt EAC hash catalogue' in Chivalry 2, kept verifying the files and it wouldn't go away - went into the game's EAC folder, deleted everything under /Certificates and verified game files again; fixed. Thanks, Epic.
Legion Go :testing update - QAM resolved (thanks antheas), external monitor resolution issue persists. Automatic resolution setting doesn’t work properly, and when manually set to the native resolution you can’t properly choose FPS cap (also blanks out when leaving the menu). When my monitor is at 120hz, options to choose via slider are 17fps or 119fps. When at 144hz mode options to choose are undefined fps or 143.