Okay...research your meds for potential side effects.
Your meds for ADHD...look up the side effects for amphetamines. It's going to mess with sleep and even though you are reporting that you feel you sleep soundly it possibly could be causing some arousals that you don't remember.
https://en.wikipedia.org/wiki/Lisdexamfetamine
Your Lexapro...research it also. All those type of medications will mess with sleep architecture and affect the sleep cycles...plus it often causes the daytime grogginess thing.
So you get it from 2 culprits...you don't get the normal sleep cycles (it reduces deep sleep and REM) which will of course mess with the restorative powers of sleep and it also causes drowsiness.
I suspect if we look at those centrals really close we will most likely see that they are related to an arousal or post arousal and that you weren't sound asleep when they happened.
So let's look at some of them really close. Go to the events tab and then the ClearAirway category and click on it. Once you have the long list of CAs in front of you pick a central/CA that has maybe a couple of CAs in front or afterwards real close in time to the one you pick out. Click on the one that you choose that will hopefully have 2 or 3 CAs close by. When you click on that one event the flow rate graph will change on the right and you will be zoomed in real close on your breathing.
Get me a screen shot of what you see zoomed in at that level. Hopefully you can catch 2 or 3 CAs on the same screen shot.
About your pressure...I don't think that your centrals are related to the pressure because if it were we would see a lot more centrals throughout the entire night and I also don't think that EPR is the cause but it won't hurt to try turning EPR off just to rule it out.
When we turn EPR off we are effectively increasing the pressure and your obstructive apneas are well controlled as it is now.
So I would lower the minimum pressure by 2 cm and see what happens. There's no urgent need to do anything with the maximum pressure setting at this time.
I don't think that you need 12 cm minimum even with EPR being used. How did you come up with these settings?
But to rule out the pressures being the cause and/or EPR being involved in the centrals it sure wouldn't hurt to try a lower minimum and/or turn EPR off.
If you turn EPR off...for sure you don't need the 12 minimum.
Get me the screen shot of a few centrals zoomed in at the level I described above.
Let's see if it looks like you are asleep or not when they are flagged. If it looks like you were asleep then we will dig deeper on trying to figure out a cause. If they are arousal related then we won't be so concerned.
I may have to RISE but I refuse to SHINE.