Just an observation on newer USB3 and USB2 ports.
My laptop runs great with the USB3, but I also have a camera (DMK51) which will only run at fast frame on USB2.
When I plug it into the USB3 I get 7.5 fps (normally 15 fps) but guess what...when plugged into the USB2 I get exactly the same result - 7.5 fps
The supplier thinks it's something in the BIOS....
Another suggestion was to disable the USB by looking for "USB3 XHCI" in the BIOS and remove it.
I haven't tried that - yet.
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