My third problem with my new UR44C:
Sometimes when in Cubase the Inspector (where you add VST-effects to a channel) in Cubase becomes unresponsive. When this happens, it is not possible to add any VST as the menu for that will not open.
The only workaround is to unplug the UR44C and then plug it in again. <-- tested and verified!
From the beginning, I thought it was a Cubase GUI, or mouse problem or maybe related to the GFX-drivers. I.e. all these things plus the Steinberg/Yamaha drivers are uninstalled and then re-installed. Still having the same problem (randomly).