Absolutely. I was prescribed an APAP with the default pressures set from 4-20. The doctor claimed that the "machine would do all the work" but I still had poor

Absolutely. I was prescribed an APAP with the default pressures set from 4-20. The doctor claimed that the "machine would do all the work" but I still had poor sleep quality. Ended up downloading Sleepyhead (the predecessor to OSCAR) and self-titrated using a band of 90% reported pressure. My sleep improved but my doctor got mad because I wasn't listening to medical advice, but going into the APAP clinician settings and changing them myself.