Here is link for Radeon users who have tried everything to get better FPS.
Maybe this could be the problem.
It seems as if it's easy to miss the AGP speed setting, and leave AGP enhancement turned "OFF" completely!
Note that the chap in the post is using 4x AGP, so set your's according to your system capabilities.
http://www.flightsimnetwork.com/dcforum ... 12750.html
Hope this helps someone.

Mainboard: Asus P5K-Premium, CPU=Intel E6850 @ x8x450fsb 3.6ghz, RAM: 4gb PC8500 Team Dark, Video: NV8800GT, HDD: 2x1Tb Samsung F3 RAID-0 + 1Tb F3, PSU: Antec 550 Basiq, OS: Win7x64, Display: 24&
