All motherboard (as with everything else) drivers are installed correctly and are up to date. This includes graphics drivers.
I've no idea if my RAM is single or dual channel.
I've done system checks for peformance, there are no programs running int he background and I have an incredibly clean task manager (not running any processes that aren't absolutely essential)
I'm running LFS with identical options and configuration as before, which includes a modest screen res of 800x600 16bit - just as before. Generally speaking I've always had reduced visual settings, including half texture res, low LOD settings, reduced shadow and dust settings etc
As for full system specs, off hand (im at work) I don't have the full details, the machine itself is a Shuttle, the motherboard is about a year or 2 old max
Its a P4 (the 4-something socket) running at 3.0 ghz
1GB RAM
The graphics card I mentioned before
Onboard sound etc and everything else
Identical hardware (except the extra 512MB RAM) to what I had when I was getting 60fps locked (with 4 or so cars on track) just a few days ago.
Anyway, cheers for the help guys, I must admit though.. this is very fustrating.. doing hotlaps with a fluctuating 30-40fps framerate just completely sucks.