New patch cause UC issues

Hi guys, since I downloaded the latest RUST patch today my FPS dropped from 60 to 10-20. I tried to find out how happend and I figured out that RUST is now using 90%+ of my UC that’s why the FPS dropped.
So I tried to reduce the graphisms quality ( I used to play on high settings before the patch ), I’ve set all to the minimum but it doesn’t solved my prob.
Do you guys have found out a way to solve my issue ?