I've been posting a lot lately to figure out why I took a significant downturn, but now I know why, but it's really hard for me to understand. I find what's hapening very frustrating, and would appreciate insights. Basically, I started 4 months ago with CPAP after almost a decade of apnea. Over the next three months, I used a Pilairo and got steadily better. I worked through some issues (got a heated hose, for example), and after three months was feeling pretty darn amazing; not quite back to pre-CPAP, but great. I also noticed that I was having lots of dreams, and not getting up in the middle of the night much, whereas I had basically no dreams I remembered for years before. I also tracked my data very closely, which helped with some issues like taking off the mask at night unconciously. Anyway, the Pilairo was great from some perspectives (nearly no leaks, low AHI, reasonably comfortable, etc.) but was causing a lot of nasal pain (inside the nostrils, lasting all day long) and leaving red marks on my face (wherever the cushions made contact). So I got a fitting and switched to an Eson, which was also very comfortable and relatively leak-free and gave me a low AHI. I didn't notice anything different from a direct comfort or sleeping perspective; I wore the mask all night, everything seemed fine. But I started to feel much worse, and I started looking for various reasons why (you can check my other posts musing about whether I need a FFM and other ideas). I would say I was halfway between how I felt on the Pilairo and how I felt without any CPAP. Then, on Friday I realized that I couldn't remember having a dream recently, so I got the idea that maybe the new mask wasn't working. And, indeed, I put on my Pilairo again Friday night (I wore it a couple of nights over the last month, but not more than 2 or 3) and immediately had a couple of dreams, woke up feeling better than I had in weeks. Still not back to normal, but darn good.
Anyway, the near-term solution is obvious; I'll stick to the Pilairo and work with lanolin or face covers to try to make it work. But I'm really distraught by the implication that I could be wearing a mask all night, that I could have data that looks great, and still be not getting good sleep. I find this a very distressing concept, since it means there is something going on that I don't understand, that I could revert to pre-CPAP feeling for some reason, and that I can't change masks without some sgnificant risk of feeling crappy for a while. Somehow I had thought finding a mask was about fit, comfort, leaks, etc. What could possibly be going on?
Anyway, I was hoping folks could tell me what's happening, and I posted a whole bunch of data below to see if it helps. I would also be very interested if there is something you can see that I can look for after. I didn't post pressure, since it's pegged at constant 5 (a couple days at 6, a test my doctor suggested, but it didn't do much, so I went back.) I used the Eson from Nov 21-Dec 19.
Here's my summary:

Here's the first set of overview data (a week of data is missing early on because I lost my sd card):

More overview data:

More:

Here's a random day with the Pilairo:

More of the same day:

Even more:

A random Eson day:

More data, same day:

More:

Two random Pilairo breathing pattern closeup (happens to have a short apnea):


Random Eson breathing closeup:

I noticed that this looked a little like periodic breathing, but I found other cases with Pilairo that looked much the same:

Anyway, I don't see anything that clearly differentiates the Eson days from the Pilairo days, other than the fact that I am clearly having the apnea like sleep with one but not the other (that is, no dreams, feel crappy, but not actually having apneas, which I don't get.)
Help?