Studio 8.1.1 build 3 crashing on WINDOWS 10 64bit

Hello we have Fusion studio 8.1.1 build 3 running on Windows 10 64bit, when the artist trying to use the "Track Node" fusion freezes for a few minutes and it closes its-self sometimes and sometimes the artist needs close it. This phenomenon is seen across all of our 5 studio users on Windows 10 64bit.
The artist's complain that when they select the points of the "Polygon" node for adjustments Studio 8.1.1 build 3 freezes for a few minutes and it closes its-self.
in both of the above cases auto save file is not being created.
Please let know what we need to do to get over these issues.
Thank you
System config : Xeon processors, windows 10 64bit, Nvidia k620.
The artist's complain that when they select the points of the "Polygon" node for adjustments Studio 8.1.1 build 3 freezes for a few minutes and it closes its-self.
in both of the above cases auto save file is not being created.
Please let know what we need to do to get over these issues.
Thank you
System config : Xeon processors, windows 10 64bit, Nvidia k620.