Did this problem start specifically after the September 8 Windows update? Also, in Device Manager, does the Scarlett show any warning or Code 10 error, or does it remain connected normally while the audio crackles and drops out? I want to make sure it is not related to a recent known issue caused by a KB update.. If it involves code 10 error and disconnection issue, then it can be related.
Otherwise, I think the issue is well documented here by Focusrite here, and you might want to try the suggestions they posted recently.