I am using GigPerformer 3.8.1 in conjunction with Pianoteq7 and also Ivory II and the Steinberg UR44C audio interface. This interface is connected to the computer via USB 3.1. In my Windows 10-PC there are five identically USB 3.1 ports and all of them are installed directly on the mainboard. To run the Steinberg UR44c-Audio-Interface, I can only use the ASIO driver from Steinberg-Yamaha ASIO driver (Version 2.04).
My problem is now:
If I start the Pianoteq7 or the Cantabile-VST-Workstation (with Ivory II) directly (without GigPerformer!), I can connect the audio interface to all of this USB ports and both VST Workstations works fine on all of the 5 ports.
But, if I operate the Pianoteq7 or Ivory-VST via GigPerformer, it only works with a single an one and only with this single one of the five USB ports. Via the other 4 USB-port, no MIDI signals arrive the UR44C audio interface to GigPerformer.
If I operate the virtual keyboard of the Pianoteq7-VST in GigPerformer, the key tones are transmitted correctly via the audio interface to the loudspeakers connected directly to the audio interface.
So, it is only a problem of the MIDI-Input-Signal in GigPerformer.
But in GigPerformer is the Input-/Output-Configuration always the same.
The problem seems only occurs in connection with GigPerformer.
What could be the problem here?
Many thanks for your support