If you up your pressure, you risk increasing centrals. Looks like you have EPR set to 3. Using less EPR may decrease CO2 washout, lowering centrals. If your doc is concerned about CA... Bilevel (called VPAP by Resmed) isn't the best way to treat it.
The ASV is the gold standard of mixed and central apnea treatment. Although, insurance may make you FAIL on a Timed mode bilevel first.
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Agree with justMongo.....lower your EPR setting. I would turn it down to 2 and watch and see if the Centrals are reduced, if so, then lower EPR further down to 1.
Your minimum pressure is fairly low to treat Obstructives, but I would not advise raising it uttill you see if lowering the EPR helps.
You also have a bit of a leak issue to deal with. It could be your mask, or could be mouth breathing.
Try mask liners and/or adjusting the straps. If you are mouth breathing, try a chin strap.