I use the resmed N 20 mask.I read your review on this mask.Do you have a favorite in this style mask?
With this mask if I don't wake for a restroom break in the early morning. Everything is okay apnea wise. When I go back to sleep it feels like I'm not getting enough air. ( machine doesn't go into ramp) When I wake in the morning and check my data it shows a large cluster of apnea's. In the last 2 weeks it shows them as Cheyenne stokes respiration for the duration of the apnea clusters.
When I use the Resmed P10 mask I get the clusters for a shorter period of time no cheyenne stokes respiration.

Pictures of what you are seeing please.
We can't see what you are seeing. If the cluster is right near a known awake time (like after the bathroom break and you are feeling you aren't getting enough air and having trouble going back to sleep) they may not even be real. Any awake flagged events don't count...you have to be asleep before they count.