Lag when i see enemies or activate ult

I used to have overwatch 1, ran perfectly fine. almost no lag, nothing.

When overwatch 2 came out tho, the lag makes the game completely unplayable. Its only in specific situations tho. When i see the enemy team, activate my ultimate (or someone else activates it) or sometimes when i use my other abilities

its just so annoying. i loved this game but its unplayable for me now. does anyone know what it is?