How much is the speed drop from translation using Proton? Is it so big or just small? Hows the performance of cartoonish Windows only games? And whats your hardware and how much is the price? I’m sorry but I cannot test it myself because I’m still on my mobile. Can you also tell about how many games are compatible with Proton? What about non-popular games?
Long story short, pacman doesn’t touch config files you have touched, instead it creates a .pacnew file. This means that if something has a config change but you touched that config it won’t get updated, so if the new config is required or running a new version of the thing with an old config causes issues you will experience those issues. In Arch systems you’re expected to know about pacnew/pacsave files and how they work. When some program has issues with old configs it can affect Arch users that don’t track their configs, if you don’t touch the configs you’re safe, but new users are likely to touch random configs for many reasons and end up with things that won’t get updated and can possibly cause issues.