During the racing the car stops accelerating and I need to tap the accelerator

During the race my car stops accelerating and I need to tap the accelerator button three or four times before it will begin accelerating again. It doesn't seem to matter whether the car is fully prepared or has some damage the problem I'm still occurs during the race. It seems that this problem occurs during the more difficult racing sessions which of course I cannot win the event because of this accelerator problems.

Please help thank you [edit: email address removed].