[Pressure] Which pressure settings should I adjust for Aerophagia

[Kabukiman]

I've decided to give my Resmed AirCurve 10 Vauto another try after not having used it for over 2 years. When I looked at the clinical settings, it was set at Max IPAP 11, Min EPAP 4, PS 3. I remember I had lowered the settings from what was recommended from my sleep study do to having trouble falling asleep at that pressure. Last night I tried raising the pressure to the original, which, according to the after-visit summary from the sleep study, was IPAP 15, EPAP 5, PS 8. This didn't seem too uncomfortable last night (except I could hear the air flow on the inside of my head), except there was one major issue. I immediately started getting what I now know is called Aerophagia. 

It seems like raising the pressure is what led to this, so naturally I want to lower it a bit to see if it stops. Only, I'm not sure what to lower and how much. I've lost probably over 50 lbs since I had my sleep study and so I may not even need the pressure as high (I still sleep around 12 hours a night so I'm pretty certain I still have OSA).

With that all being said, how should I approach lowering the pressure? I figure EPAP can stay where it is, it's the IPAP and PS settings I don't understand. If I lower the IPAP, do I need to lower the PS with it, and vice versa? The PS seems quite high compared to what I've seen other users talk about, usually I see people saying they have theirs set at 3 or 4. I'm not sure if that has anything to do with it.

[Kabukiman]

Here is last night's OSCAR data, the 17th, when I was having the aerophagia, compared to the previous night, the 16th, before I changed the settings (and I think I was even able to fall asleep or very close for the first time!)