# Are ”delay” needed when switching on/off multiple Lights in a Flow?

**URL:** <https://community.homey.app/t/are-delay-needed-when-switching-on-off-multiple-lights-in-a-flow/86997>\
**Category:** Questions & Help\
**Created:** [August 13, 2023, 10:24pm UTC](https://community.homey.app/t/are-delay-needed-when-switching-on-off-multiple-lights-in-a-flow/86997 "2023-08-13T22:24:22Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [August 13, 2023, 10:37pm UTC](https://community.homey.app/t/are-delay-needed-when-switching-on-off-multiple-lights-in-a-flow/86997/2 "2023-08-13T22:37:29Z")

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There seems to be a general issue for several users here:

> [@Homey pro 2023 - zwave too much traffic error?](https://community.homey.app/t/homey-pro-2023-zwave-too-much-traffic-error/84036):
>
> I had a perfectly working homey pro 2023 with about 45 zwave devices. Since today, the zwave is not really working anymore as I get an error: "Could not send command. Too much Z-wave traffic. (TRANSMIT\_COMPLETE\_FAIL). This goes for all zwave devices now, and might be related to the latest firmware update. I have tried to reboot, reset (with back) but nothing helps. My old homey pro works perfectly, so its not the devices themselves. anyone else experienced the same?

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_[View the full topic](https://community.homey.app/t/are-delay-needed-when-switching-on-off-multiple-lights-in-a-flow/86997)._