I am running some 2008 terminal servers in VMware ESXi 5.1. They are meant for about 25 users each to use a few specific applications and access some folders. They do everything they are supposed to do.
Some users insist on using firefox inside this RDP session. That works fine, too. If the user however, opens a page with moving flash content, mouse-over-effects or just large images, if he scrolls this page all over his 24" screen, then performance is very slow, as is to be expected.
Also, scrolling through PDF files ore word files with embedded images cause this issue.
I have done some testing and even though I know this is not a very good idea, I have tried to find out why. The lines have plenty open bandwith on both ends. CPU and RAM look good.
What exactly is the bottleneck in this constellation? Is there anything I can do to help this issue to function a little better at least?