Since todays last DCS 1.5.5 update I experience a lot of stutter that makes flying practically impossible. Few days ago, prior to todays update I downloaded the latest Nvidia driver 376.09 and DCS ran smoothly even with the MiG on that driver..all was fine (but before that I also got stutters). After todays update, as I said stuttering has returned. I already tried deleting options.lua from saved games folder and that did not work. Then I completely reinstalled DCS and the GPU driver using DDU, tried it again with no success. This started to happen quite a lot with last updates and that is a real mystery to me how something that used to work fine repeatedly has such issues. Here is a track file if it could be of any help. MiG-21_stutter.trk