If your team keeps complaining about the WiFi, the problem is almost never the brand of access point you bought. Here's what's usually actually wrong.
The pattern
The phone call goes like this: "The WiFi is terrible. We've replaced the router three times. We bought a mesh system. We added two more access points. Nothing fixes it." So we walk the site, plug in a spectrum analyzer, and within 20 minutes we know exactly what's going on. It's almost never what they think.
The actual top causes
1. Too many access points, too close together
This is the #1 cause of "we keep adding APs and it keeps getting worse." When access points on the same channel are too close, they spend more time deferring to each other than serving clients. A WiFi network with three properly placed APs often outperforms one with eight crammed into the same space.
2. Channel plan never set up
2.4 GHz has only three non-overlapping channels in the US (1, 6, 11). 5 GHz has more, but DFS channels can vacate without warning if radar is detected. 6 GHz (WiFi 6E/7) is a different game again. If nobody set the channel plan deliberately, "auto" often picks badly.
3. Wrong PHY rates and band steering
Most cheap APs leave 1 Mbps and 2 Mbps PHY rates enabled "for compatibility." Result: a client at the edge of coverage drags the whole AP into low-bandwidth mode. Disabling rates below 12 Mbps is one of the highest-impact changes you can make.
4. Building materials
Concrete, brick, metal mesh in walls (lath-and-plaster), elevator shafts, foil-backed insulation, and water (yes — fish tanks, water pipes) all attenuate WiFi significantly. The same network design that worked in your old building can fail in the new one.
5. Interference from non-WiFi devices
Microwaves, Bluetooth, baby monitors, wireless cameras, old cordless phones, and certain industrial equipment all transmit in the 2.4 GHz band. A spectrum analyzer (not a WiFi analyzer) shows this clearly.
6. Backhaul, not RF
Sometimes the WiFi is fine and the problem is what's behind it: an underpowered switch, a slow internet circuit, asymmetric routing, MTU issues, or a single congested uplink. WiFi gets blamed because it's the visible layer.
What a real WiFi project looks like
- Predictive survey. Floor plan + materials + capacity targets → modeled coverage and AP plan. Cheap step. Skipping it is expensive.
- Passive survey. Walk the existing space, measure existing RF environment, identify interferers.
- Active survey. Walk again with a real client, generating traffic, measuring throughput and roaming behavior.
- Design. AP count, model, placement, channel plan, power levels, PHY rate floor, SSID structure.
- Cabling. PoE budget, drop locations, and structured cabling done correctly.
- Install + tune. Mount, terminate, configure, and tune based on observed behavior.
- Validation. Re-walk with measurement tools, document coverage and throughput per zone.
This is what we do for wireless engagements. The output is a network that just works — and a written record of what was done and why.
Two things you can do tomorrow
- Walk your space with a WiFi analyzer app on your phone. If you see five or more strong APs from your own network at any single point, you have too many APs too close together.
- Log into your AP controller and check the data rate floors. If 1 or 2 Mbps are enabled, disable them. Set the minimum to 12 Mbps or higher. This single change has fixed more "the WiFi is slow" tickets than any other.
Need help with this in your business? Contact CCRAMM Technical Services — we respond to inquiries within one business day.