Seems like valve read this post :D
https://steamcommunity.com/games/1675200/announcements/detail/4674264042200389436

I think it’s related to the monitor I was plugging on HDMI. With a different screen it works better.
But I still have sometimes the displayport screen not turn on after sleep, and the deck crashing when unplug/replugging it :(

I wasn’t clear in my post, but I have a monitor plugged via HDMI too, and that’s the one having trouble either turning on, or being stuck in 480p. I will try with a different monitor or cable.

With only the displayport monitor it works well

It’s false if I remember correctly. Steam prohibits you from selling steam keys outside the store for less than the price on steam. They don’t forbid you from selling cheaper elsewhere

I did not yet upgrade to the latest version, but to migrate to compose I only had to copy the volume paths and the environment variables from Synology.
I can share my compose yaml by the end of the day if you need.

Before I upgrade I will try putting the cache on a SSD instead, seems it can improve performance quite a bit

The latest version of Synology with the container manager allows you to update images from the registry and will restart the container for you.
But I still migrated to docker compose to enable hw transcoding with quicksync

They could even have a second USB C port and have display output on that plus a full size hdmi instead of the two shitty micro HDMI ports