Fps problem game unplayable

Reacently game become unplayable out of the blue, maybe after update. I play with same ring overwach 2 since launch, had 120 stable fps all the time on max settings. I have tried other games cyberpunk, rivals to see maybe its my pc, but have no fps problems on them so it must be overwatch. When i start match all goes smooth as butter but after around 1-2 min in game, fps drops start to apear small stutters at first and rapidly goes worse, untli it just freezes game, it even sometimes realoads somehow mid match. Reinstaled game, and all drivers still no change, also tried set all settings to low, 0 effect. Is there anything else i can try to fix it.

intel core i9 9900k
12gb ram 1300MHz
RTX 2060 super

Check to see if Blizzard changed your graphics settings. The game has been known to change graphics settings back to maximum or something similar, even if you have custom settings saved.