UARS BiPAP trial, still tired

Hi,

my psg showed 0.0 AHI but almost 10 REM RDI hourly and I'm trying to get this fixed. My doc refused treatment citing no AHI so I'm on my own and below are my initial results with the Aircurve 10.

I'm always waking up after ~3 hrs for no idea what reason. I've also tried different pressures, last night it was 8/12 PS4 which to my understanding is already quite high for this 9/hr REM RDI and all it did was severe aerophagia I didn't experience with lower pressures.

Can you please have a look at the below data and advise if there is any common factor that'd make my therapy useless at this time?

https://sleephq.com/public/teams/share_links/3b7b6d9f-f284-4b62-9f81-b9b243c36104