Reducing Zigbee utilization?

Note that changing Zigbee channel should be among the last steps and not among the first steps, (you now even get info about that now when go to change the Zigbee channel in ZHA). So always first make sure to try following all these best practice tips in this guide before changing Zigbee channel or other measures → Zigbee network optimization: a how-to guide for avoiding radio frequency interference + adding Zigbee Router devices (repeaters/extenders) to get a stable Zigbee network mesh with best possible range and coverage by fully utilizing Zigbee mesh networking