I have just got a UR-12, when watching YOUTUBE videos, the sound dissapears and then comes back after a few seconds.
It happened in three different computers;
Lenovo W540 Windows 10 Driver Version 2.0.4
HP Zbook Windows 10 Driver Version 2.0.4
Macbook pro Retina 15 Macos 11 Driver Version 3.1.1
When using on MS Teams the sound gets some additional noise every 2 minutes.
Any clues ?