Response is very slow

I tried to change DIO with web service console(RCI) for CPX4, XBIB board, router and sensor .
But it is very slow response.
Maybe when CPX4 is doing “channel_get”,CPX4 can not do “channel_set”.

I traced python source.

src\devices\xbee\xbee_device_manager\xbee_device_manager_configurator.py

self.__ddo_semaphore.acquire()

Maybe “channel_set” was stoped by semaphore.

I want a quick response(DIO OnOff).
What should I do?

sorry, poor English.
thank you.