After getting it running quite quickly and smoothly, I've hit an
irritating problem with FS9. Every 12 seconds, regularly, it does a half
second pause. It does this whether flying over a heavilly autogen
populated area, or sitting on the ground at Belfast City.In fact it's
slightly worse at Belfast. It even does it when FS9 is paused
The only changes to the system have been installation of XP SP2 and of the FSX Demo. A quick check confirms it does't happen with FSX Demo.
All ideas gratefully received.