Is there anyone able to use a CPAP in high pressure and exhale normally ?

Just wondering what’s the point of cpap having pressures like 17 to 20. I still have reras with 10 cm h2o but when I increase the pressure to 12 my breathing becomes more difficult, specially exhaling, let alone the crazy number of central apneas than i did not have in my sleep study.

I am going to try a bipap, pray for me 😄