[parabyl]

Proton is really quite incredible as a compatibility layer, I've not seen any performance drops (if anything, only small performance gains, which I assume is due to fewer background processes in the OS), but most incredible is the frequency with which Proton is updated and worked on.

I'd tried gaming on linux before and gave up after a week or two of configuration attempts. I had put it off for ages and tried with proton on a dual boot system earlier this year, and instantly had access to everything installed on windows. It also means I can actually recommend linux to people with older machines trying to squeeze a little extra out of their lifespan, without having to tell them it's an uphill battle to get gaming working as expected.

[NovaDudely]

The one very specific oddity depending on how old the system is, at make sure the GPU supports Vulkan. Yes, you can force it down to OpenGL but compatibility is low and buggy. Not the fault.of proton as they are just focusing on the path forward.

[fomine3]

Some people say that a thing how Steam Deck performs good is thanks to shader cache. There's only one GPU(SoC) SKU for Steam Deck like normal gaming console, so shader cache can be precompiled for Steam games, unlike PC.