First of all, sorry for my bad English if i'm mistaking. This issue made me really sad, i can't find any solution and even though i love this game so much, i'm about to delete it. This issue started after the Cold War update. I tried a lot of things but none of them works. Solutions in youtube videos always same and useless. Of course i edited the adv_options file, which is a common solution. I tried 35 different numbers and variations there! The most useful numbers was ''0.55 - 6'' for me. But still, i experincing stutter and lagging problems. In gulag, in rebirth modes my gameplay is so smooth. I tried Black Ops free zombie modes, there is no problem too. But when i back to Verdansk map, i don't want to play this game. I bought a 144Hz monitor just for this game a few days before the update. I wish i didn't.
My second problem is stable fps. I want to gains more fps and i'm lowering my graphic settings. But my fps is same in every settings, it's always between 70-90 fps.