1. Using a home router for 30+ devices
Consumer routers hit CPU limits around 40 concurrent sessions. You need SMB-grade (Ubiquiti / MikroTik / Cisco Business).
2. Overlapping 2.4GHz channels
Only channels 1, 6, and 11 don't overlap. Everything else creates interference.
3. No VLANs
Guests, IoT, cameras, and staff on one flat network = one compromised device compromises everything.
4. No band steering
Devices cling to 2.4GHz even when 5GHz is stronger. Band steering fixes this in 1 config toggle.
5. No coverage plan
One AP in the corner isn't Wi-Fi. It's aspiration. A heatmap survey costs less than a week of complaints.
