After the mid season update my fps has been tanking

Since the latest update I was running 240 to 220 but then now my fps regularly drops between 60 to 40 but when I look at the ground goes back to 240 and worst case scenario mid fight goes down to 25 fps which is actually unplayable idk I’ve tried everything I could of to no avail I’ve recently been playing again and been enjoying it but this just ruins the game for me and it sucks is anyone else experiencing this problem