[Citrix Receiver/ICAClient] Windows 10 client very laggy

Symptom

The laptop to which I connect side is on Windows 7 but my local machine is on Windows 10. I previoulsy connected from the Linux client on various distributions and the connection just was fine. The notorious mouse pointer shadow is disabled and no theme on the laptop side.

"Cause"

It seems that Windows 10 handles TCP stuff espacially its windows size.

Try

playing around with the autotuning settings. By default it is set to normal.

netsh interface tcp set global autotuninglevel=disabled

netsh interface tcp set global autotuninglevel=highlyrestricted

netsh interface tcp set global autotuninglevel=restricted

netsh interface tcp set global autotuninglevel=normal

Details at https://technet.microsoft.com/en-us/library/cc731258(WS.10).aspx
Be aware, however, it might have negative impact on other TCP using applications!
However, this did not easen my pain with Citrix.