Misohoza, if you chose it as your playback device, can you playback e.g. the sound from a Youtube-video on the speakers connected to the UR44C or can anyone test that? Every audio interface should be able to do what a soundcard does because it is (among other things) basically a soundcard.
Yes, I can.
How many devices should be shown in the device manager for the UR44C?
I have it listed twice under Audio inputs nad outputs and once under Sound, video and game controllers.
Do you use it bus powered or do you use the power adaptor? Is the power source switch set correctly?What about the usb port? Did you try changing the USB Mode (usb 3.1 / usb 2.0)?
When you open the Control Panel (Yamaha Steinberg USB Driver) and press “Ctrl + Shift + A” you should see more options and settings. You can give it a try.