Feeling bad despite all of my attempts.. And.. Central apneas.

[quiescence at last]

I agree that an EPR of some value, probably 2 or 3 will help stamp out flow limitation, and assume you will stay with min of 9 (actually I would make min at 6, but ok at 9). If you stay at 9, please set your ramp to off or make ramp pressure 6 instead of 4 (the current setting).

The addition of EPR generally cause an initial CA score that is higher.

CA score cannot be driven down by higher pressures, and can in fact result in somewhat higher number of CA.

You are not in danger with CA scores under 20 per hour, and probably not even higher. nothing about a CA is due to obstructed air flow.

Our goal here is to discover a setting that gives you a rested feel after a night's sleep.

QAL

[Preparedinho]

Bad news.. 
I taped my mouth and used the 9.6 to 11 pressure and apparently it went so badly.
I had Cheyne Stokes for almost 30 minutes and AHI of 4.22.
I want to trash my APAP.

[Jay51]

The vast majority of the time, Resmed machines falsely report CSR.  Very rarely are they accurate.   

Here is some more reading on it:  Cheyne-Stokes respiration

[Preparedinho]

Hello, I'm back. I have news on my situation, like.. I see patterns now. 
Everytime I have these events I'm moving and I'm probably interrupting my sleep, causing me to wake up groggy and having major anxiety issues and crashes during the day. 
Basically I NEVER have more than 30 mins of sleep without interrupting it. 
The events are showing like the pics I'm attaching and they are associated with leaks (probably from my mouth since I'm using pillow mask and it's not likely to slip out from my nostrils).
Cpap nights bring probably less event than cpap-free nights.
Are you familiar with this? How can I prevent these events from occurring?

[quiescence at last]

In both of these snippets, you awoke, shifted and even held your breath a little, the leaking was measured after you got started moving. It took a few seconds to solve that and after 3 or 4 breaths were back in the calmer sleep state. The second clip shows much more flow limitations.

QAL

[G. Szabo]

The events are showing like the pics I'm attaching and they are associated with leaks (probably from my mouth since I'm using pillow mask and it's not likely to slip out from my nostrils).

You changed position, which disrupted your breathing pattern. This is normal. Additionally, some flow limitations in the inhalation period can be observed before these events, which disappeared after them. Hence, it is possible that you charged position because of the flow limitation.    

I also had leaks when I used a pillow mask while my mouth was tightly taped shut. Pillows do not need to come out of your nose holes to leak. Some stretching and misalignment can also cause leaks.

On your last uploaded chart, you have more CAs than Hs. If these CAs disturb your sleep and you want to reduce them, try EPR=2. You can have a lower number of CAs and a higher number of Hs.

Next time you upload your chart, please include the flow rate function.

[Preparedinho]

Is this the pattern for you?
1) Flow limitation 
2) Awakening 
3) Changing position
My awakenings/arousals are rough, I do weird sounds like gasping and I move. 
Here it is the flow rate chart, I don't see a link between flow limitations and the events. 
I also noticed that playing with EPR doesn't change the situation, I will still have the CAs, even with different pressure.. some people told me "you need EPR", others told me "remove it, it's causing your CAs" but I'm setting EPR=2 for tonight, let's see.
Little reminder: I had no CAs with nasal mask but I had too many leaks and I was not comfortable with that. 
Thanks for the answer anyways, your help is precious.

[Preparedinho]

Tonight I'll give my f30 mask a chance because the nasal pillows is perhaps leaking through my mouth and it's not effective to prevent my breathing disorders. Last time it was leaking like crazy, maybe I can fix it.

[quiescence at last]

...
Here it is the flow rate chart, I don't see a link between flow limitations and the events.
...

Ha ha.  I cannot see anything in the chart that would indicate anything, except the machine was on, and detected breathing.  Alot can be learned from close ups and with pressure and other stats supplied in a normal oscar chart properly arranged.

 
QAL

[G. Szabo]

In Wikipedia, you can find detailed instructions on organizing your Oscar charts to include everything relevant.