Well here I am being all glib again. There was so much wrong with that video it is hard to discribe. That is not the way the program is supposed to behave. Five minutes I will never get back again. But if Adar puts his eyes on it that is your best bet for getting it straightened out.

By the way, did you try my configurations for Reaper? Cause I see you have the Audio outs all messed up (IMO) which can be fixed in the configuration settings. I really do hope Adar can point you in the right direction. smile

BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6