Hello there
I ve also a quite big problem who puzzles me a lot. even when I ve tried the 4 different dlls mentionned on this thread.
I too have a 8800gt 512mo 3gigs of ram and a dual CPU 4400+ AMD with windows vista, running fraps and I have 20 fps on grid with 24 AI and lap runs with 20-35 fps on 1650*1050, so 1st move is to lower a bit graphics and effects, I assume I was too greedy, no improvement at all.. shadows lowered, track distance, track detail, number of visible cars still goes with 20-35 same for other tracks, with doubt I tried with low textures.. and no changes of framerate as well... even with the vsynch on or off
So as a ultimate move I tried to change resolution switching to good old 1024*768 no antialiasing and aniso.. no no mister still 20 fps on start.
Other Simbin games have about the same problem, it's even worse sometimes for GTL but I still run the game in full details everywhere at everypoint..
rFactor runs perfectly smooth strange enough because I tried with some mods 35 IAs max visible cars full details on Mid Ohio 1650*1050 and gets a solid 30-35 fps on worst cases
I tried different drivers, the lastest ones I don't know how to fix this issue
Maybe you would have some tips or clues to help me solving this problem
Thanks in advance