For the past few nights, my USB scope camera has been hanging randomly. It looked like an intermittent shutter failure (blank images), except there were no partial-image artifacts that usually accompany shutter (or filter wheel) mechanical failure. And once or twice a night, the guider went stupid.

Now I've just discovered that last week's Windows 10 updates activated "Allow the computer to turn this device off to save power" for the first Generic USB Hub on all 3 of my Windows 10 PCs. This is under Device Manager > USB > Generic USB Hub > Power Management tab. So, uncheck those boxes (again--sigh). My PCs' USB Selective Suspend under Windows Settings was not affected. My camera's running great after unchecking the box.

Friends, you'd be well advised to check yours too. And -- gee thanks, Microsoft.