WIFI Sense:Reasons Why Your WIFI May Suck.
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Does our “need for speed” make our Wi-Fi suck?
It is common knowledge among Wi-Fi professionals that using 20 MHz or 40 MHz channel widths when planning 5 GHz networks offers the best overall experience for enterprise networks.
This is because enterprise networks can often cover large footprints and need higher density for many connected devices. Using narrower channel widths provides many more available channels for building out networks with appropriate channel reuse and allows flexibility to avoid co-channel interference from noisy neighbors.