Essentially it has taken 10 pages to tell us that even after implementing our advice, you are incapable of improving. You should stay around the threads that focus on improving technique and put more time into analysing your mistakes rather than accusing everyone of cheating.
Where does the time difference of cheaters stop and the true world best begin? If you look at the spread of times, they are not consistent with cheating, if there was cheating there would be a group a long way ahead of everyone else, but the spread of times are consistent, with the elite pushing the boundaries of what is possible, a large amount of times in the 18's and thousands of times in the 19's.
That is still 5 seconds faster than you, are you saying that thousands of people are cheating, with no evidence of any hack files in existence? This thread should be closed, you are dragging it on and on refusing to accept reality. The reality is you are vastly behind the majority of players and must be, to get a time of 2:24 at max potential, all over the road. Either that or your brake pedal is stuck on whilst you are carving out these perfect laps where you apply power at the same time as the best in the world. Either you are lying, are trolling, or have dodgy equipment. Or PD felt like they would give you comfort hard tyres for a laugh.