Quote from Scawen :

Yes - as DedWolfBones said, each AI car is in full physics - unlike in multiplayer where distant cars are invisible (no physics) and middle distance cars use a simple physics model and only the 4 nearest cars use full physics, so you have much better frame rates online with a full field.

I think the "simple track" option is only available on graphics cards that do not have Hardware Vertex Shading. HVS is no longer an option because people often disabled it thinking it was slowing down their computer when in fact it can only speed things up - massively. Simple track on a modern card would do nothing but slow down the card - so I don't think that would help you at all - and anyway if you can't see it in graphics options then it's not available to you because your card is too new (made within the last few years).

Thanks for the definative answer on this Scawen! I will quit chasing my tail on this issue and reduce the number of ai till it is ok.

btw, Thanks for all the fun! My UF drives very much like my track-day Mini Cooper. Keeps me fresh and out of real speeding tickets

BG

Quote from DeadWolfBones :

The problem (and big plus) with the AI in LFS is that they use the same complex physics calculations that the human player does. The problem, of course, is that it takes a ton of computing horsepower to get an entire field of AI running with all those physics calculations. That's all the problem is.

Thank You sir for that view of the problem. It makes perfect sense. Because it runs fine without the 14 or so we can run now. I will just start taking one ai out at a time till I find my sweet spot and leave all the eye candy running. I like to start in the back and work my way through many cars.....


oooo and btw, I would still like to try the simple track deal that someone said helped a lot.

Thanks
BG

I seem to be having FPS issues with ai Cars on the track. I have gone through these threads and tried just about all and have a modern system that runs all my other racing sims very well. Without ai I run in the 80-90s. I saw one post that mentioned trying the simple track option, but I cannot find it in my interface? Can someone direct me to it to try that(probably the only thing I have not tried yet)

Thanks guys

btw, yes I have an active spy and virus program and have tried them disabled too. All unneccasry stop stopped in the background. My GPL even runs a solid 36 at all times!

this sim just has me baffled on this issue.

Is there a place to manually pick simple track if it is not in the interface?

Thanks guys.

btw....
I seem fine online too, with many cars. Just strange

system should be up to it= dual core 3.2 800mhz
2g ram
6800 ultra pci 256

Temps are good and run one and a half hour races in leagues with all other sims and no issues.

I love LFS, but would like to race the ai sometimes in practice.

Thanks for any help guys

BG