In another thread, looks like I'm not alone...

Quote from KROM :

This the case with me also.

Quote from wien :

I've seen a lot of people report the same thing. Must be a driver issue...

FSAA is still on and Vsync is still capping at 59.9FPS. I'm using an old 6800 GTS so maybe this is an issue they've fixed in newer hardware?

I had the stutter, here is how I fixed it. In your video card settings (not LFS settings) set Vsync to "Controlled by Application".

Now go into LFS Options > Misc
Set Full screen vertical sync: to [yes]
and Limit in-game frame rate: to [no]

Also, switch to windowed mode (shift+F4) and then back to full screen if you're using Vsync, it nearly doubled my FPS for some reason.

I'm not sure if this is a bug but when I switch to windowed mode Shift+F4 and then back to full screen mode my FPS nearly double. I verified this with FRAPS.

I'm using an old GeForce 6800 at 1920x1200 @2xFSAA. Latest drivers 169.21. I have Vsync turned on because I'm using an LCD.

Can anybody reproduce this? It would be interesting to know.

I have an Intel Dual Core running @2.66Ghz. I run LFS in a window and watch the CPU usage. It's around 35% on both cores at the back of a ten car grid. It stays at 35% for most of the race.

I have a benchmark replay I use and at the front of the grid I get 45FPS and at the back I get 32. That tells me that it is in fact the graphics card choking.

I'm using an old Geforce 6800 which is still surprisingly fast at 1920x1200. I usually race using 2xFSAA and it rarely drops below 60FPS unless it's at the start of a big race.

My old single core Athlon 3000 showed 100% CPU use in my LFS benchmark so the mobo/cpu upgrade made sense for me.

(Ridiculous performance trick - if you switch to windowed mode (shift+F4) and then back to full screen your FPS could nearly double - at least they do for me)