Hello,
I had the same problem when plugged into usb 3.0. (intermittent glitch/silent)
I plugged the ur44 on usb 2.0 then problem solved. 
I guess there is something wrong with the driver trough usb 3.0 
Hello,
I had the same problem when plugged into usb 3.0. (intermittent glitch/silent)
I plugged the ur44 on usb 2.0 then problem solved.
I guess there is something wrong with the driver trough usb 3.0