I'm currently running an Ubuntu host with a Windows 7 VM inside Virtualbox, with other VMs running seperate OS, too.

I have noticed that the Windows 7 VM in particular is suffering from poor graphical performance. I have Virtualbox Guest Additions installed, and 3D/2D acceleration turned on with 128mb of VRAM given to the guest OS in VB.

Even with this, I am noticing that dragging windows around is laggy, and even re-drawing web pages in Chrome is surprisingly laggy.

I notice a similar issue with other VMs, but I have only given them 32mb of VRAM, so expected it. I assumed that throwing more VRAM at the Win7 VM would improve things.

Am I wrong?