please help with APAP settings/Oscar data

Have been on APAP about 2 weeks. Sleep study showed 107 AHI, and oxygen nadir 50%. Started originally at 4-20cm and was getting 2-3 AHI and increased it to now on 8-20 cm pressure (ramp 20 minutes starting at pressure of 5, EPR 2) and still getting around 2.5 AHI (which is obviously a great improvement but wondering if I can get the # of AHI even lower). My average pressure per my machine is 19. I have Resmed Airsense Auto 10/full face mask/heated tubing with humidifier on 5. Do I need a bipap or can I optimize my settings on this machine? I guess technically I am below 5 AHI which is the treatment goal. Also, I have no clue how to read OSCAR.

I attached my OSCAR screenshot.

Thank you in advance!

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