First night with CPAP was horrible

Wow! My first night with CPAP was horrible. I didn't have a problem with discomfort of the mask so much as feeling like I was suffocating. Pressure of 4 was nowhere near enough airflow for me.

Within 5-10 minutes I would start to feel hypoxic and panicky as if I were running out of air under water. I figured out how to adjust the minimum pressure on my Resmed Airsense 11 Autoset and bumped it up to 8 which feels better sitting here on the couch.

What are your experiences with minimum pressure?

Also I don't think the nasal cushion or hybrid styles will work for me. Just ordered up a nasal pillow style mask(Resmed Airfitt P30i) and an over the nose(Philips Respironics DreamWisp) to try out hopefully with more luck.