Although a fast video card is certainly important, raw CPU
speed and memory provide the biggest performance gains when
running this sim. Scenery-loading pauses can be dramatically
reduced if you have 128MB or more of RAM, and the frame rates
will become almost playable if you're cycling them through a
Pentium III processor. You can reduce the scenery-loading pauses that occur when
switching cockpit views by pausing the game and then selectively
going through each perspective in sequence. This caches the
information into memory so that the graphics will load much more
quickly the next time you select these views. Over time, this
cached memory can be overwritten, so you should perform these
steps again before executing a landing (because you need to look
out the window a lot).