Citrix hooks are memory murderers, I have included extra optimizations, e.g. exclude svchost and before the system took 4,168 WS MB, after it is 2,577 WS MB. Mad! I am on 2507 CU1

Can you elaborate at all on this? I am also seeing svchost increasing my resource usage a lot and I have a couple thousand users.

Yeah CTX hooks have been a pain in my side with latest Adobe where you have to remove installed Hooks in my case anyways, post Adobe install for things like smartcard signing to work. That said @jvitech I'd be curious to hear more as that's been a back burner issue here

Sorry, busy time! Citrix injects all processes their Citrix .dlls. It is used mainly for published apps and some features like BCR (.dll needed on the browser). So far, I have excluded many apps including svchost (the more users you have the biggest it gets), Teams, etc. without any impact and I can see memory saved. I am still working on how much but there is a substantial gain here. You prob already know this but you create this key and then reboot is required. You can confirm it works by using procexp , show dlls and you won't see any Citrix dll loaded on the apps excluded! Max character per app is 14 so truncate it if needed. Key: HKLM\SYSTEM\CurrentControlSet\services\CtxUvi Value Name: UviProcessExcludes I will provide later the apps I have excluded so far successfully.