Where can I find in deph documentation on steamOS?

SteamOS: UI scaling issue on the ROG Ally family

Potential Steam Machine issue: Proton launch delayed ~30 seconds when SteamOS has no active audio input

PSA: SteamOS Proton games may hang for ~30 seconds if no microphone or recording device is enabled

SteamOS has support for Xbox Ally, here you can get support for any issue you have when using SteamOS in your Xbox Ally