Ideas
Wow, I've been having this exact same problem. I'm going crazy. Also wasn't doing too well on controller, but my scoreboard is flashing in an actual game-breaking manner. Haven't found any solutions to this so far. I've already reset all the key bindings, everything.. To no avail. Could we get somebody to look into this?
I've come upon a couple of more users that have the same issue. It seems the problem is with the way the game detects wireless keyboards, once you connect the keyboard with a wire to the ps5 the issue is resolved. I thought the game might have duplicated some buttons in the settings so I found the interactive keyboard button binding in the settings and removed the binding, but unfortunately this did not fix the issue. I hope someone looks into this because it really gets to you after a while.