It would be helpful to see the entire night, not just a zoomed section. Always start with the full night and if anyone wants to see something in particular they will request a zoomed in view.
My opinion is those settings are not doing anything to help you. I suggest trying the following settings:
EPAP min 8
IPAP max 15
PS 4 full-time
No ramp
Trigger med
From there we can tweak as needed. Also, look into the pillow and soft cervical collar. Between getting a reasonable starting point for settings, a flatter pillow, and a soft cervical collar, I hope things will start falling into place.