I use a logitech wheel. And this may apply to you.
This "hyper" mode, sometimes when my wheel is re-initialised when i turn or accelerate it massively speeds up the time in game, so if im online and that happens, i go turbo mode, then it just pauses until everyone catches up, for them it looks like im lagging.
Solution for me:
Shift+c re-initialises the wheel, so i keep doin this until it's all good. This also happens to me in other games.