Sometimes my frame rate will drop like sub 30, as in 17 or fps. I should be able to max this mod with no issue. Has anyone else had this issue? I'm using the GOG version. Specs are...

i5 3570K
HD 7970 GHz Edition
8GB RAM
Windows 7 64bit


everything else works fine just this little problem.

are you using polymer as well?

if so then that's the norm, especially with ATI/AMD video cards

yeah using polymer. man that really sucks.