Are you using any BiFlex exhale relief? I think maybe you are and that explains the EPAP variations. No big deal.
The VS2 snores...not enough to worry about one way or the other.
Read this. Scroll up to the top to where RobySue starts the thread.
viewtopic.php?f=1&t=155478&p=1182872#p1182872
Flow Limitation flagging is turned off in Fixed mode...so the lack of FL flags is meaningless.
Let's continue the fixed experiment but do it in auto mode with some pressure tweaking...so you don't lose FL flagging. May or may not be important.
Go back to auto mode..
Set minimum EPAP to 11.0
Set maximum IPAP to 14.0
Set PS minimum to 3 and PS maximum to 3
The machine will now function like the fixed bilevel with the settings you used last night but FL flagging is now turned on.
Do this for 2 or 3 more nights...
If the obstructive stuff in your AHI (OAs, hyponeas) still is running 1 to 2 ish AND you are still seeing very many RERAs and/or snores or FLs...increase the EPAP and IPAP 0.5 cm...and do another 3 or 4 nights with more pressure.
The Centrals/CAs...we ignore for the time being...go in and check to see if you think they are SWJ or not...make a mental note and that's it. Primary goal with this experiment is see if you can sleep more soundly with less arousals or wake ups.
I am telling you this in advance because I may not be around for a few days. Going to Vegas for the holidays tomorrow and as much as I love you all....I will be with grandson and my daughter and just have more fun stuff to be doing than hanging around the forum.

I may have to RISE but I refuse to SHINE.