kf2 frame drops 1080ti

well.. Im having Frame Drops lately. after I changed my Graphic card.. I had a gtx 1070 and everything was perfect. I upgrade to a gtx 1080ti

and now I have some frame drops.. I was playing in 1920 x 1080. all in ultra.. with the FLEX OFF...

I reinstalled windows and installed everything from 0 ... still same problem. I only have problems with this game..

I have been playing other games in 4k, no problems and with 60fps stable...

* the frame drops happens almost random.. sometimes theres a lot of action.. and no frame drop at all.. then im running around.. no enemys nearby, i jump and turn around.. Frame drops..

---------------------------------------------specs -----------------

win 7

4790k 4.0
gtx 1080ti msi gaming x
z97 gaming 3
16 gb ram

samsung 48 UHD


kf2 frame drops 1080ti