I think 90FPS or more is a bit OTT! I've getting around 60fps with high settings and getting no steering lag at all with my DFGT. 60fps might not sound much to power PC users but its still pretty damn smooth and if my entry level gaming PC can run the latest gen of sim racers (inc pCars) then I'm a happy bunny. I'm thinking of upgrading my GTX545 to a 660Ti but not sure how much improvement I'm to expect? But yes, I agree, too low fps will give you steering lag. A friend of mine is having the same problem with R3E and rFactor 2 because his machine isn't up to the job.