>But I think the compression problem is the more likely culprit (between these two)

I can disable the compression.

But, as additional information, we do not have that in our UAT environment. This is the same virtual environment except a test server. It does however have less traffic. Knowing that, do you still believe this is a compression issue or that could be related to a local setting specific to the server or to the production line of servers sitting in that virtual environment?