First of all hello all , i bought the game last week installed it and have been plauged with bad stuttering in the graphics ever since. Now i have a good machine 3gb ram ,intell quad 6600 processor nv 8800gt card so i know the pc can handle a game that uses old tech (CFS3). I looked at all the forums and tried all the fixes eg sliders down from 5 to 1 or 2 any way all to no avail. However i came across a site that states that cfs3 will not work properly on mullti core machines, it causes stuttering and screen flickering .It also gave me a down loadable mini programme to fix it so after dl it and running a virus checker on it i thought what the heck and installed and ran cfs3 through the desk top icon that this programme put on. Cfs 3 ran smooth so i clicked the OFF luanch icon and the bad stutters were still there.Now this little programme shuts down 3 of my cores and lets cfs3 run on 1 core which solved the prob but it dosent work when i ckick OFF icon. So i launched OFF went to ctrl alt delete got the task manager up found OFFexe running right clicked on it and under afinity unclicked 3 of the cores and left 1 running . I then went back to OFF and hey presto it was running perfectly no stutters,flickering or any graphic issues at all. 
  
If this solution has been posted on this forum then i apologise for wasting your time but i havent found it. I didnt sort this out till midnight last night and i was knackered so i went to bed i am now in work posting on the forum so when i get home i will post up a link to the site i got the mini programme from. The one thing that is needed is for some bright spark to make a mini loader for OFF that shuts down the 3 cores or 1 if you have a duo like the one for cfs3 instead of havind to load OFF and doing the ctrl alt tab thing  
Any way hope this helps, basically if you have a multi core processor CFS3/OFF wont like it or run properly and you have to disable all the cores except 1 and then it will run perfectly 
  
Ok found the site that explains the core thingy  
http://www.easyhr.com.au/software/easy_cfs3.htm 
  
This puts the desk top icon to run cfs3 with cores off but 1 what we need is the same thing but running 
 OFF  
Stronty