problems Exhaling

The ramp is useless when the minimum setting is 4 to whatever.
The whole idea with ramp is to gradually increase the starting pressure to whatever the actual set pressure is.
The machine can't go below 4 cm...and if the minimum pressure setting is 4 cm...there's nothing to ramp to.
Also at 4 cm ...EPR can't even kick in to help.
And a lot of people say they can't exhale at 4 cm when in fact the problem is they just aren't moving enough air to be comfortable.

A good trial setting ...in auto mode or fixed mode.
Minimum of 6 and EPR set to 2....and turn off ramp totally.
Try it while awake and see how it feels.
Report back with results.