tried everything I can think of, tried to fix fps back up with changing every single graphic option, vsync on/off, windowed, fullscreen-windowed, back to fullscreen, restarting game, verifying gamefiles, trying with no mods, reinstalled graphicsdriver, restarting computer... nothing helped except that autodetect button (which sets it to way higher settings than I actually play with btw)
win10
i5 4670k
8gb ddr3 1866
gtx 760 (driver version 355.97)
dual monitor setup (1080p/144HZ on GPU for game , 1050p/60Hz on CPU for periphal)