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Drivers Caused Windows To Detect All USB Devices Extermely Slowly!!! Avoid CSR Harmony BT Devices!
on July 19, 2015
For nearly a month now I was dealing with frustratingly slow USB device detection of USB serial adapters, flash drives, and more. Sometimes it would take Windows up to 30-120 seconds to detect devices that I had just unplugged and plugged back in. I finally broke out Sysinternals Process Monitor. I saw that every time I plugged in a USB device, I would see CSRHCRPServer.exe blow by in the log. I ended up ending task on that process, and guess what, my problems went away!! I uninstalled the CSR Harmony Bluetooth stack and switched over to a Broadcom based USB Bluetooth adapter.
Furthermore the Serial profile sucks on this. If your device disconnects, it can take minutes for it to reconnect vs. seconds with the Broadcom adapter!