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@atomicpoet I did have one smaller game that crashed under Proton after the title screen due to missing codecs and libraries. After using ProtonTricks to install the missing 5 dependencies, it works.
None of the company's other games have this issue, and all of the rest of the them have good or even great Proton & Steam Deck support.
@atomicpoet The saddest part is that so many big names intentionally break that compatibility with Linux by either using anti-cheat that either has their Proton and Linux support ripped out or is so invasive that you'd think Microsoft and/or China paid them to make it so, essentially what we'd call a rootkit in the cybersecurity field.
The only one I think is even remotely interesting was GTA V Online. Oh well, now I don't need that 
for any reason.