# Zigbee and CPU - Athom support gives up =\> support didn't give up! **URL:** \ **Category:** Developers\ **Created:** [March 22, 2021, 2:34pm UTC](https://community.homey.app/t/zigbee-and-cpu-athom-support-gives-up-support-didnt-give-up/45089 "2021-03-22T14:34:21Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![Eternity](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/eternity/32/102113_2.png) [@Eternity](https://community.homey.app/u/Eternity)\ **Post date:** [March 22, 2021, 2:34pm UTC](https://community.homey.app/t/zigbee-and-cpu-athom-support-gives-up-support-didnt-give-up/45089/1 "2021-03-22T14:34:21Z")
The last couple of days I have been in contact with Athom support. Allow me to explain my case… I have a Homey (Early 2016) running f/w 5.02. Before I update to v5 I had issues with excessive CPU loads. They would go over 200% and Homey became sluggish or went offline. I had already replaced the power supply, so that issue was not part of my problem. I contacted Athom support and they told me that my zigbee communication was the reason for the load. I accepted that and thought that the zigbee rewrite with v5 would solve the issue. So, I now find myself running v5, have reset my zigbee and re-included all devices and rebuilt my flows. To my dismay the CPU load is still excessive… (150% or more) ![Schermafbeelding 2021-03-22 om 12.07.35](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/b/fb47f9779fb303bcdbfc49f53670187197bb3e2a.png) I contacted support again. They did try to help me. They concluded that the 4 routers were the cause, as they were constantly communicating with Homey, flooding it with data…the advise was to check my flows! I installed Papertrails and added logging to all flows (great App @Dijker.G !). Flows are not looping, no strange triggering of multiple flows. All is fine! This I reported back to Athom support. I explained that we are talking about 4 routers; 3 curtain controllers and a relay. The relay does not have any flows; it is a zigbee repeater. The curtain controllers only have flows that are triggered by a switch. I press that switch once or twice a day! I switched off the Aqara App completely; cpu drops to around 75% Athom now simply confirms that zigbee is flooded with data and the 4 routers are the cause. I checked the options in the curtain controller and the relay; they do nog have a setting to decrease reporting interval. If I check the reporting interval in developers, I see the curtain updates every 4 hours! ![Schermafbeelding 2021-03-22 om 15.21.12](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/8/9/899fa012e1a42d78e744ddf860290126993f205b.png) The relay more frequently: ![Schermafbeelding 2021-03-22 om 15.31.00](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/3/0/301721df75076f7eb105ebe66b93294f45fdb31f.png) @TedTolboom Can the curtain controller or the relay cause flooding of the zigbee? I was hoping that my case would help Athom improve Homey. Unfortunately I feel they do not see an oppurtunity to use my experience to resolve the problems and - hopefully - fix a bug/issue that others are experiencing too. _PS_ _Was not sure in which topic to post. Please [@moderators](https://community.homey.app/groups/moderators), feel free to place in the correct section of the forum!_ --- _[View the full topic](https://community.homey.app/t/zigbee-and-cpu-athom-support-gives-up-support-didnt-give-up/45089)._