Does anyone else get extremely poor performance with their G4 Doorbell Pro?

I am insanely frustrated with this. Our doorbell is really inconsistent to the point where we can't depend on it. We have had a support ticket open since August but I feel like they keep giving us the run around. Our symptoms are:

• Doorbell ring works absolutely fine
• When an event is triggered (motion or ring), going to the event shows a black screen with no recording at all. So if someone rings on the doorbell, we can't see who it is.
• Connection shows excellent performance, but the stream is often down to 3-6 FPS.
• Recordings from events have glitches where every 5 seconds it will show 1 frame from several weeks ago, or they are completely black and show no footage at all.
• "Corrupted" events will also sometimes show low quality single frames from several weeks, if not months ago.

Our doorbell is wireless, on an AP 6 which is facing the doorbell, roughly 4 meters away, through wooden walls.

Ubiquiti are saying it's bad connection, but our continuous recordings work mostly fine.
I put a G3 Instant outside connected to the same AP and with the same events, and it worked flawlessly. Full quality, events were instant and we had no issues at all. I even showed them a side-by-side video of multiple events where the G4 would chug down to 1 FPS but the G3 Instant wasnt hindered at all.

I'm not sure what to do here. I can't wire the doorbell. I can't move the AP any closer without moving it outside entirely (it has it's own AP positioned for the doorbell).

Maybe I am kidding myself and it is connection issue. It just doesnt make sense to me given the tests I have done.
Does anyone else have similar issues? Am I gaslighting myself?

Cheers.