[Pressure] REM Predominant/Low REM

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I'm a CPAP user with REM predominate sleep apnea.  I was wondering if anyone has any  insight into what is going on with my choppy breathing and REM ending early at 5:28.  It appears to end in what is reported as a central.  I have a Garmin watch I wear and night that correlates this period of choppy breathing with REM.  This was my 4th REM 'session' in the night pictured and it ended prematurely after only 15 minutes.  My research has said that closer to 45 minutes would be expected.

My current settings are CPAP mode 12 with EPR 3.  Mask worn was the ResMed F40 with a soft cervical collar (positional apnea had been suspected in  previous posts from me).

[gainerfull]

That choppiness is a position change followed my a significant flow limitation followed by another position change and a breath hold (normal).

Garmin isn't known for great sleep staging, I'd recommend at least the latest Apple Watch SE.

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That choppiness is a position change followed my a significant flow limitation followed by another position change and a breath hold (normal).

Thank you for the reply!  So it sounds like in the screenshot I posted things look fine at the pressure I have set?

I have a new question about a weird flow rate chart I had last night (picture is attached).  Have you ever seen this pattern before?  It lasted about 25 minutes then returned to my normal breathing pattern.