more details please. Is it on the same hardware platform? Is it going live against a database? If it's live, maybe is there a resource queue issue on the database side that is causing queuing of parallel queries to be single threaded?
Both connections are live with a Teradata database without using Extracs.
Both machines are identical and are virtual machine with 16 CPU and 32GB RAM running over W2008.
When it interacts with filters, it works fast, but take a long time to open the first time and switch between tabs.