Is my AHI data misleading

My AHI is much higher in REM (~60) than NREM (~20). The sleep study showed that different pressures are needed for each sleep stage: 8cm NREM and 11cm REM.

When I was using autoPAP, pressure 7-15, my AHI data was ALWAYS low, around 3 everyday, but I felt terrible. Could it be that when I go into REM sleep, the pressure does not increase quickly enough, and I just "bounce" out of REM? So then I get a lot of NREM sleep and then the data shows a low AHI (good), but I get no REM (bad).

I've been trying the higher pressure of CPAP 11cm, but my AHI is higher, ~9, and I have dreams so maybe I am getting some REM? 11cm is the new recommendation from recent sleep study, so I am thinking I should go with it, even though the AHI data is higher, for above reasoning. I want to try it for about 2 weeks.

Only 1 central at 11cm pressure for a long time on the sleep study.

Anybody else have something like this?

TIA