Hi,
I have also carried out some tests this morning using one of my troublesome VMs and here are my findings:-
1. Logged in to VM on Vsphere client console (XP VM with screen res set to 1920 x 1080)- CPU level normal
2. Opened youtube and watched a couple of videos in full screen last one Full HD 1080p, full screen. - VMs Task manager shows CPU usage at 100% and Client Console performance monitor shows Virtual CPU Usage at 100% - ESX TOP shows vmx-svga at 7%
3. Logged out of VM on Console - Virtual CPU Usage goes straight back to low level
4. Logged in to same VM on EVGA Zero Client - VMs taskmanager shows CPU around 4%, but Virtual CPU usage shoots up to 100% an stays there - ESXTOP shows VMX-SVGA at 90% plus
5. Finally here is a screen capture of the performance monitor of this machine during this time with the relevant points marked
Hope that helps. If you want any more info, or to discuss, please PM me or post here (remember I am in BST time zone)
BTW the VMWare support call raised for us by Dell is VMware SR number 13317064304
Kevin