Played a round on Arras just now where I was experiencing pretty bad lag and some rubberbanding the whole match (had ping variance that would jump from 20-50ms), but I was able to clean house, went 54-12 with an EMP and the Medic. I could easily damage players, but it seemed like most of their shots would miss, it was especially noticeable when I ran around with the revolver when my ammo ran out. I would dance around the enemy firing 3-4 shots in some cases and would only take 50 or less damage throughout the encounter.
It was almost like playing against bots. My usual experience is having a very good, stable connection with low ping and dying instantly from other players.
Seems like there's not really a middle ground, but now I see first hand why OORs have been a big problem in this series.