RE: First OSCAR Report
Welcome! You have a lot of grouped apnea which is a obvious sigh of positional apnea. Positional apnea is also called chin tucking where your chin drops to your Sternum cutting off your own airway. No pressure changes can help. You have to find a way not to chin tuck.
It could be as easy as changing your sleeping position. Sleeping on your back is known to cause considerable chin tucking also to high of a pillow can do it.
If it is not that easy to correct they have found using a collar does the trick. I have a link to collars in my signature. It showed people without collar and the SAME people with a collar - high differences.
Collars are cheap and they are available at any drug store. The only measurement you need is how big a neck you have and distance from your chin to your sternum.
RE: First OSCAR Report
You may well benefit a lot from using a collar. I would also recommend that you untie your machine's hands and use a pressure range instead of a fixed pressure. You can keep your minimum at 9 but raise your maximum to 20 as an experiment, just to see where it goes. Or if that makes you nervous, try a maximum of, say, 12 to see what happens.
Making this change may directly help to lower your AHI, and the information it would give us could also be useful in guiding future advice.
Meanwhile, congratulations on your new machine and your new start on therapy for your apnea.