Hi,
I'm afraid it didn't help. I spent a lot of time with Focusrite support and they couldn't resolve it either but they DO support Windows 10. I temporarily fixed my problem by doing a system restore to a week ago before this weeks Windiws update. It worked for the rest of the day and now today, back to problems. However I noticed Windows detected that there's an update so it's back to that. Seems there's a compatibility issue with the latest Win update and the Focusrite driver.
If you can think of anything else please let me know.
Thanks.
Jeff