Yesterday, I blogged about turning off the thumbnail on the Virtual Server admin interface for a couple of reasons, one being performance or load time of the admin interface. I found it in the admin guide, in the section relating to "Improving Virtual Server Performance". There's some other useful tips in there which I recommend you following. I've cut and pasted below, but also look at the sections about optimising hard disks. There lots of tips in the admin guide if you haven't read it thoroughly.
You can improve the performance of Virtual Server by making the following configuration changes on the host operating system:
- Increase the acceleration of your graphics hardware to full, as follows. On the Display control panel, click the Settings tab, and then click Advanced. Click the Troubleshoot tab, and then move the Hardware acceleration slider to Full.
- Disable all unnecessary pointer options, such as pointer trails and shadow cursors, as follows. On the Mouse control panel, click the Pointer Options tab, and clear the check boxes of any options that you do not need.
- Optimize system settings for performance, as follows. On the System control panel, click the Advanced tab. Under Performance, click Settings, and then click Adjust for best performance. Click the Advanced tab, select Background services, and then click OK twice.