This indicates a buffer underrun or a sample rate mismatch.
Behringer’s website can be a maze. Do not search for "UM2 driver" in the general search bar, as you may end up with outdated firmware tools. Here is the exact path: behringer um2 setup driver on windows 10
The Behringer UM2 is an incredible value at its price point, but the journey to get it working on Windows 10 is rarely smooth. Unlike premium interfaces from Focusrite or Universal Audio, the UM2 requires manual driver intervention and Windows tweaking. This indicates a buffer underrun or a sample rate mismatch