Performance issue

[danger]

After the latest patch like 2 - 3 days ago i noticed my fps went from 35 - 45 fps to 25 - 35 fps and my fps isnt steady it will drop to really low for 2 seconds and then go back up btw my settings are on max
i made sure i wasnt running any background processes that can affect it, i was thinking it was something to do with the patch and performance of the code
any ideas...