Last night i dont seem to remember an issue with running into a group and casting overload right as i was about at the center of them, seemed to work ok for me but this was not a pvp situation. Though i did notice that since it was a quest area where the monsters spawned and i would execute the move as they were spawning it would lead to unpredictable push back locations for the monsters lol, some ended up on the other side of cave walls or stuck on the wall up in the air.