Quote from techbrew
For JM 1.0.0 there isn't a way to configure the update timers. (I use timers to avoid slowing down Minecraft.) I've considered making the timer values configurable in a properties file. If you'd like to see that in a future release, please open a feature request Ticket so I can keep track of it. Thanks!
Yeah, in my case, I just upgraded my rig and have a pretty high end gpu/cpu. So I could handle increasing the rate a bit. I hope to see it in a future release!