Proton is basically just a version of Wine but Steam has other runtime apps like Pressure Vessel that work together making the game run. Don’t know if Lutris has anything else than managing and running the apps in the Wine prefix with specified Wine version. This is as deep as my knowledge goes.

LineageOS 20 for me does that and works normally if my phone port isnt acting up, i don’t need to enable developer options for file transfers like op does.

You can directly download Optifine as a mod, and is the only mod that I know even has an installer, so yeah that changed

Or just add a Vanilla instance with Forge and and throw Optifine in mods

I wouldn’t go with watercooling as the pump can be even more noisy (had 2 AIOs, both pumps were louder than any fans) so I would go with a good heatsink, like Noctua NH-D15 or be quiet! Dark Rock Pro 4. 64GB ram is a lot, unless you need it specifically for something I would go with 32GB and also for 2k€ PC I would downgrade CPU to R5 7600X and put the saved money to better GPU. (Slightly better GPU with slightly worse CPU = better fps on most titles than vice versa)

And what comes to monitors it’s just preference on what quality and features you want. If you play a lot of “cinematic” titles I would go for better image quality over refresh rate, and have some form of variable refresh rate so you don’t need to sacrfice too much game graphical quality for smooth fps. And if you have never had monitor with high refresh rate don’t go too high at first because there is no coming back.

Otherwise seems like a decent build

I hope your sleep time doesn’t include railing it