Using ASV for CSA

I have both CSA and OSA. I’'ve been on ASV machine for about 6 weeks. I’m averaging 8 hrs ASV per night and having 1-2 apnea events. After about 5-6 hrs of sleep I’m starting to feel like my lungs are being stretched and I’m having trouble staying comfortable. I’m a side sleeper but never had this “stretched” feeling before ASV therapy. It wakes me up and causes me to take smaller or shallower breaths to not make the “stretched” feeling worse. Has anyone else experienced this? Could this be related to pressure settings?