>>Correct.
>>The issue is why is it OK in one environment and not in the other.
>>Do all w/s at the customer site have the issue?
>
>Not correct. IMO. What would happen if this app were installed on a 100Mbps LAN? He'd then be asking what to do to speed up the app, not try to fix the LAN.

Well, if you're in "what if" mode, from a business POV the process should look something like this:

1. Determine a spec for "acceptable performance"
2. Determine the most cost-effective way to achieve that performance

The latter might involve:

- hire a consultant who knows how to use WireShark, get her to analyze traffic and tweak the network configuration
- upgrade a 100Mbit network to gigabit
- get faster computers
- modify the application
- maybe a combination of some, or all, of the above

It's by no means obvious that modifying the application is the quickest, lowest-risk and most cost-effective option.