Hi @aliz23,
Thanks for reaching out. I'm sorry you're experiencing flicker. Both those cameras tend to use a long GOP recording format, which is likely the cause of the flicker at high playback speeds. Was this working better for you in an earlier version, and the flicker is new to this update? If you exit multicam mode, is the flicker still noticeable?
I hope we can help you soon. Sorry for the frustration!