Wi-Fi load
There is no single device limit. What matters is router quality, client behavior, airtime usage, 2.4 GHz congestion, and whether your smart home is built from chatty Wi-Fi gadgets or better protocols.
Warning signs of overload
- Random offline devices with no clear pattern
- Slow app control but normal internet speed tests
- 2.4 GHz devices failing more than phones/laptops
- Routers that need frequent reboots
Best fixes
- Move cheap IoT gear to a dedicated 2.4 GHz SSID.
- Reduce channel overlap and band-steering weirdness.
- Prefer Zigbee/Z-Wave/Thread for sensors and simple always-on devices.
- Upgrade weak ISP routers before buying random repeaters.