I have an open case @ Citrix:
The new Receiver (Version 4.3) consumes a lot of CPU time. The average is 27% but it could raise up to 38% and go down to 15%. But the Receiver always keeps the CPU busy (Selfservice.exe)
I am currently investigating the issue with procmon. At the moment I can’t see the root cause of the issue.
Citrix confirmed, that they can reproduce the situation in their LAB.
More news to come…
A final solution and the root cause couldn’t be found. I’ve now proceed and deployed the latest receiver version (18.104.22.168) in our organization. Together with Citrix we’ve identified that setting the Storefront URL during the initial installation and centrally by GPO might have caused the high CPU time as well. So I’ve removed the storefront URL in the GPO.
Since this change the issue hasn’t been reported anymore.