A family of Microsoft relational database management systems designed for ease of use.
Officially, Microsoft doesn't seem to know.
Right now we are simply trying workarounds. So you'll need to try either of the recommended workaround and see if either of them solves the issue for you. Please report back as it will help others.
As for me, I never found a solution that worked. We have given the user a new computer and are currently trying that out.
My $0.02 is that it is a network problem either caused by this user sitting in the furthest desk from the server or an intermittent hardware problem.
But again, this only happens in Win 10 and the user operated fine in Win 7 in the same DB for about 3 years before this issue arose.