Pauses With EZ-Landmark and FS2002

Does anyone run Abacus' EZ-Landmark with FS02? I just downloaded it and registered it and was trying it out in demo mode around Chicago. It works fine but about every 20-30 seconds the sim annoyingly pauses for a second or two then resumes normally. It happens every 20 - 30 seconds. When I turn off EZ everything returns to normal. I tried Abacus tech support and they admit they are stumped. They said the program only reads FS files and shouldn't do this. What's more, I have a brand new system with a 2.8ghz P4, 1 gig ram, and a Nvidia 128mb GForce4 Ti-4600G card, and have had smooth performance with no stutters. Any ideas?? Thanks. :-)