Sorry, I don’t have a great answer here… This issue seems like it might be beyond the scope of SGPro… maybe? I don’t know. We do have lots of Nikon users with a vast array of astro-equipment, so it doesn’t seem to be a common issue. I’m not sure if you have access to a different machine (even to borrow), but it would be a good data point to see if your USB buses are being mismanaged by the windows drivers… well, I guess that’s an idea too. Whoever made your motherboard or laptop will also have sprayed out a bunch of driver updates over time. You should check those out and ensure that all of your machine’s USB drivers are up to date (especially of Windows 10 just installed its default USB drivers).