Surprised that your customers upgraded to Win 10. I think most business users didn't do it, because they were afraid of this kind of troubles.
Most business users that I deal with are\were happy on Windows 7 and skipped 8 completely. Any small operations with external IT that are replacing equipment are happily going for Windows 10 now, as that's what is being pushed by Dell etc. Any big operation with an internal IT dept (ourselves included) seem to be largely hanging on Windows 7 because they can dictate via volume licencing what gets installed, and it's a known quantity.