My wifi is not slow at all, but I started getting more and more connection problems from random devices. The solution for me was to replace some wifi devices with zigbee versions.
I started with adding a SMLIGHT SLZB-06 to my network. This is a Zigbee 3.0 to Ethernet USB WiFi Gateway Coordinator with PoE and it works with Home Assistant using ZHA or Zigbee2MQTT.
So I gave it a fixed IP address, and on my NAS, where Home Assistant is running in a Docker container, I installed eclipse-mosquitto and koenkk/zigbee2mqtt. Next I added the SMLIGHT SLZB-06 and MQTT integration in Home Assistant and everything started coming together and working like a charm.
First added devices were temperature and humidity sensors, Sonoff SNZB-02P and SNZB-02D. Next I started adding smart plugs Sonoff S60ZBTPF and IHOMECAM Smart power plugs, replacing my HomeWizard wifi energy sockets.
And guess what? With more devices on zigbee, my wifi is stable again and I get a lot more data out of my smart home!
That’s all folks!
Have a nice day…