Screen Deformation and Fps Issues in Heist Town

Guys u know any information for solution this problem. Im taking +100 fps even full juse simu maps but in heist my fps is crash.

networking mode: lockstep (but i try others. but same results)

And for this problem im recorded video. If u want to see there is the youtube link:

https://www.youtube.com/watch?v=3uxd4GTEVQU