Hi Gary,
Let’s notify @mike and @vova , they have a definite preference for Roon not crashing for their customers and may be able to investigate further.
There were some Windows 10 stability bug fixes in Build 65 and it may be that others have been identified and are awaiting the next build.
It may assist if you could provide further details as per this post and set out any circumstances or conditions where you’ve noticed crashes occurring.