AI Smooth Question

Hi,
I recently got AI Smooth for my FS 2004 primarily to avoid go-arounds during landings (also got WOAI Traffic). I got everything running right - AI Smooth, necessary FSUIPC but for some reason, no metter how I adjust the AI Smooth settings, I still get go-arounds at busy airports. There is always aircraft on the runway infront of me and I am instructed to go-around, or aircraft cut infront of me just before landing. So, basically AI Smooth seems to have no affect. Before de-installing it, can someone tell me if there is something I am doing wrong (with AI Smooth settings?)
Many thanks