Anno 1800

Installed Ubisoft Connect as a "non Steam game" and installed after that Anno 1800 in UConnect. Used Proton GE 8-14. Installed Decky and Powertools, fixed the CPU clock at 3500MHz. Installed CryoUtilities and set the swappingess to 1 and swap size to 16GB (in order to run progressed savegames, Anno is hungry for memory and will crash if you don't). Set everything in graphic settings to low, disabled AA. You don't need FSR, it just makes the game look worse. Use DirectX 12. Since Anno is a CPU intensive game, the CPU should always run at the highest clock. In order to achieve that, we need to reduce GPU load as much, as we can. In addition to the settings already mentioned, I recommend to limit the framerate at 30 FPS. You will have dips here and there, but mostly it will run stable at 30. You can set 60FPS, but in late game this is not stable, it will vary from 35 to 60.