Symptoms: On Immense, moving around or zooming the map causes freezing and delays.
Theories for Fixes: Graphics Card Upgrade, or Add Memory.
Rig: i7 950 @ 3.07 GHz, 4 CPUs 8 Virtual
6 GB RAM
GTX-460 Graphics Card
Win 7 64-bit
Action: Went from 6GB RAM to 16 GB RAM
Result: Night and Day! Can zoom and move around the map with perfect smoothness and zero delay.
Before, the system used less than 5 GB of RAM. After upgrade. it uses 9.2 GB. Bring on Insane!