I had my study with the outcome being my pressure should be 14cm of water. The Dr suspects that the low pressure provided by my acap could be due to the algorithm or my relatively narrow nasal airways.
I made some changes to my acap and got it providing 14cm of water and more at times during the night . Then 3 days ago I changed the machine to be a cpap at 14cm H2o and I feel better, not that I was bad before.
So I guess a Auto machine is not always the best. And that you have to keep aware of what is happening.