I believe that 1 second refresh is the set limit (possibly so as to not flood the Cloud Server)… Sorry, nothing can helped for now…
Besides, how would you even utilize a 10ms chart reading? it would scroll by to fast to make any sense.
Not to mention flooding the system and kicking in the governor like protection, else nothing else would really work anyhow due to disconnection.
Trust me on this… I have tried to push virtual writes that fast (to LED widgets, not the SC)… it barely works on a Local Server, and only if nothing else is trying to run.