How to increase update rate to 100Hz?

Hi guys!
I would like to increase update rate to 100Hz.I have modified the configuration of 6.81 Mbps mode with channel 5. I changed the numbers of slots to 1,superframe period to 210, poll sleep to 210.I have modified the DIP switch to 6.81 Mbps with channel 5.But it doesn’t work!The data of Serial port is not stable!I’d be appreciated that if you can guide me!