Miracast either partially or completely not working with Virtualbox, SonicWALL or DisplayLink drivers

Ok, I have a new wrinkle with Miracast and the Venue 8.

I recently decided to look for a good Android emulator so I could throw some random Google Play Apps on here and see how they do. Started with Bluestacks because it was top of the list in several forums, but I was pretty disappointed with its performance on the Venue. I then found Genymotion and I was encouraged because I saw it used Virtualbox, which I was already familiar with. Installed it and it worked great. Very smooth compared with Bluestacks. However, I also found that something in the Virtualbox install broke Miracast. I found it mentioned buried in a posting here from November:

http://forum.tabletpcreview.com/dell/59427-venue-8-pro-miracast-print.html

Anyone else aware of this?

I previously tried installing a Displaylink docking station for the tablet as well, encouraged by this video:

http://forum.tabletpcreview.com/dell/59427-venue-8-pro-miracast-print.

And found that the drivers that install for the dock break Miracast clone mode.

Before that, I installed the Sonicwall Global VPN client on the Venue to connect into my office and clone mode stopped working then as well. Dell owns SonicWALL now, by the way.

It is starting to feel like any time I try to extend the use of this tablet I should get ready for something with Miracast to stop working. I have been constantly taking full disk images before any large software installs so I can roll it back for just this reason. I have been really disappointed to see how fragile Miracast is on here.

I understand this is new technology, and mixing and matching a lot of vendors can be hard to determine what the trade off will be, but if something as basic as Displaylink or Virtualbox or SonicWALL can cause it to stop working gets me pretty discouraged.  I am really surprised Dell did not at least build in a backup micro HDMI port.  Would it really have cost that much more or added significantly to the tablet's weight or bulk? I want to show off all the cool things this tablet can do (and it can do a lot don't get me wrong), but I have to be willing to give up something else. If I want to wirelessly display my screen, I can't do android VMs. If I want to set it up with an external dock and connect remotely to the office I can't clone the screen. These are all basic things that I was expecting to do on a daily basis.

It is getting kind of embarrassing trying to demo this thing and finding that something else has broken Miracast again. I am going to try these three (SonicWall VPN, Virtualbox and Displaylink) on a Surface tablet and see what happens. That would perhaps tell me better whose drivers are to blame here.

Dell-Brian, hope you are listening. If you or anyone has any insight on this, please share. I really need to know if anyone is aware of these things in particular or working on them. Miracast is one of the things I wanted to highlight with this tablet, but I can't if setting up all these other functions keep breaking it.