Performance issue

We have done an initial load test of one Adobe form within our Portal and the initial results are not good. as the volume of data transported over the network is excessive. This will result in serious performance problems for our more remote locations (MY, AU) and disappointing performance for others. This means this is a highly urgent problem for us that potentially impacts our whole Interactive forms strategy.

what are the possibilities to reduce data transfer size?

Any other tips that may be available to improve performance are highly appreciated as well.

Sven