Thanks! Sorry for the late reply. I've done a little testing on my end and have noticed something that might be of interest. I experience the issue more on what I would consider "slow" devices. I typically use a raspberry pi, PI 3 MODEL B, for controlling my scope and gear. The pi, as we all know, has rather slow USB ports/IO. The issue is very reproducible on the pi. If I instead plug my gear directly into my laptop, using either the usb 2 or 3 ports, I experience the issue far less. It seems the issue is related to how long it takes to pull the image data off of the camera. I've seen similar issues reported with the PHD2 guiding suite. Here is a google group message I came across while poking around.