I've had performance issues with WCUSA for the past few days, even after the hotfixes. After I play on the map for a while (10-15min) the FPS count drops dramatically (from 30FPS to 5-10). This issue also happens when I Alt-Tab out of the game then i get back in, regardless of the amount of time I've been playing. This bug happens only on the new map, and to fix it I have to restart the game. I tried disabling all the mods I had installed but the bug is still there.