Hi Kagaji,
There is a handful of quite skilled and dedicated key runners. I would assume they are interested in pushing as far as possible. I just looked through their stats, a couple have timed 10s. the rest are timing 9s and 8s. Then there is a decent clip of people below that rolling around most evenings. Ive only done a few myself 
If you want more info, I would suggest you reach out on discord to-
@smokinhotginger
Cheers!