This has been happening to a lot of our 9360s/9370s for about a month now. We narrowed it down to the same ASMedia USB A11 update from Dell Command Update. It usually happens in combination with our Dell WD15 docking stations. The result is a BSOD and it crashes all USB and Bluetooth devices until reboot. We have found about half the time installing the older A10 update will fix it, but it does come back most of the time.
I opened a ticket with Dell about this and it was escalated, but so far we haven't gotten much response.