I'm experiencing the very same slowness and periodic intermittent UI freezing on Citrix Workspace on Windows 11, as the other persons here having reported the same issue. Also, the CPU on my laptop feels to need to do some extra processing cycles on Windows 11 when logged on to Citrix Workspace. This does not occur on Windows 10.
Not sure if a Citrix Workspace issue on Windows 11, or something else - I'm running the latest Citrix Workspace application version on my Windows 11 laptop though (as on my another Windows 10 laptop).
kind regards,
Mika
UPDATE 2024-09-06: it turns out this issue has to do with the Intel Graphics Driver software. Updating the Intel graphics driver software as per the instructions by Intel solved the issue on my laptop - please read:
https://www.intel.com/content/www/us/en/support/articles/000097751/graphics.html