I am curious. I have never experienced this volume ramp problem and have only experienced the other problem 1 time but I'm not running 7.2.22 firmware. Instead, I run 7.1.21 firmware and use PEPv1 for now. That will change in the very near future.

When you guys say 232, do you mean 1-way actions in 232 or are you using serial.send/match/receive? I think it is the former but would like confirmation please as this issue has piqued my curiosity.