Yeah this is the reason most probably. After the UI update I had the exact same problem. After 2 days of search for solution I finally found it. When it tries to open with discrete GPU it just blinks and doesn’t open. I can only open it with integrated GPU. And you definitely have to use DRI_PRIME=1 argument for every game to open them with dGPU. It is kinda annoying but it’s only solution for now until Valve updates it.

Debian not recommends testing for everyday using. You definetely have to look at the site. Afaik it is basically a bad version of unstable that gets slow updates and it is only for testing purposes.

I think your problem is you are using a niche Arch derivative that has a small user base. You should definitely consider using more mainstream distros so you can easily find the help you need until you are comfortable and feel confident with using Linux.

Innovations are pretty rare in the desktop space but this looks like a really good innovation if implemented bug free.

After trying to do it with docker or ansible manually for hours and failing, this was soo helpful. So thank you.