Performance or loading in? I can only get on WCUSA by loading it through a scenario for some reason. It gives me an error when I try to load in from the free roam tab.
Did you correctly install your mods? https://wiki.beamng.com/Installing_Content DDS is the preferred one, as it's much more optimized for game usage than JPG. You should convert your textures.
Im getting very low fps on west coast. I tested east coast with same settings before update and i get about 30 fps, but on west coast i get only 10-12 fps even if i drop resolution into 1280x768 (normally 1600x900) and i tried dropping view distance from the default 4000 to 100 but no difference.
Turbo and the afterfire is bugged on my system. This is running in safe mode with cleared cache and redownloaded game:
remapping if Horn button doesn't work, saving custom in-game car config doesn't work.... Are you kidding me what are you doing 3 months?
If I turn on vertical synchronization (both normal and smart) then FPS will drop to 10 frames from 30-35 without it Great update, new map is excellent, racing track is also cool
Changing ilumination quality to anything over Lowest causes a severe framerate drop in WCUSA. VERY severe. (From 40fps down to 8)