Arturia V-Collection 5 GUI problem with 4k Monitor (Showstopper)

I recently replaced my SGVA monitors with a 4k screen and now Arturia V-Collection 5 is unusable.

As you can see, the GUI now contains a static image but no controls that one can work with. You can’t even select Presets. The same problem with -all- Arturia VSTis.

Total showstopper.
farfisa-gui.jpg