Poor performance from VMware clients

Hello

 

We are experiencing poor performance from VMware-based clients when connecting to an application behind the F5s.

 

If the VMware-based clients connect directly to the back-end server it does not have the poor performance problems.

 

However there are no issues when the client connecting to the F5/Application is a proper hardware laptop.

 

The application end-goal is to retrieve multiple images to the client. This is an internal application, so no Internet facing.

 

In the F5 tcpdumps I see lots of TCP Window Update and TCP Zero Window from the VMware-based client, this is not the case when the client is the hardware laptop.

 

I've tried various tcp-profiles: tcp, tcp-lan-optimized, tcp-legacy, etc. But no luck.

 

Anybody perhaps experienced similar issue?

 

Many thanks,