Win10 guest flickers continually in LL3.2 host (Oracle Virtualbox v 5.1.10)

[m654321]

HHMMM...
Did some searching; could be something within??
http://winaero.com/blog/how-to-get-virtu...ild-10041/
Kinda the same..
http://windowsreport.com/virtualbox-vide...indows-10/
Specifically NVIDA but  good info..
https://www.virtualbox.org/ticket/13653
https://forums.virtualbox.org/viewtopic.php?f=2&t=80186
Maybe something?? Good Luck 

Thanks firenice03.
I had a look at these links but couldn't find anything to solve the issue.
I had a bit of a further think... usually the simplest solution is the one to try first...
As Task Manager and Microsoft Office apps open in the Win10 VM without flickering, this suggested to me that the flicker may be due to a display driver and not an application.
So, bearing this in mind, I went & opened up Oracle VM VirtualBox Manager, clicked on the Display icon on the left hand side, and unticked the box for Enable 3D Acceleration (I recalled that this feature was highlighted as experimental during the earlier Win7 & 8.1 VM installs that I'd done - so it might be the culprit). I left the 2D Video Acceleration as it was, already enabled.

The Win10 VM now works full-screen without any flicker

Mike