Optimizing Flash (server rendered) with ThinOS and XD4

First off recommended VM specs:
XP 2vCPU, 1G RAM
Win 7 2vCPU , 2G RAM

Next, refer to following Citrix article:

http://support.citrix.com/article/ctx124516

Note: You can ignore the Progressive Display part since just changing the audio priority helps quite a bit without having to compress image further. Another thing I have seen help especially with high quality flash is to change the max FPS to something like 15 or 18 (instead of the default 24). This can be done in the registry of the VM:

http://support.citrix.com/article/CTX123543