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Unifi NanoHD Checklist for slow wifi - James Benson's tech hub

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Original source (jamesbenson.weebly.com)
Tags: wi-fi unifi ubiquiti jamesbenson.weebly.com
Clipped on: 2021-10-19

My frustration began when I am paying for gigabit fiber and only getting a few hundred MB/s downloads. So here is a guide I used to help speed up my wifi with my new Ubiquiti nanoHD Access Point.  First, remember, your Mbps connection is, in reality, is 8x less than that once you convert it to the more familiar, MB/s .
1000 Mbps = 125 MB/s
500 Mbps = 62.5 MB/s
100 Mbps = 12.5 MB/s
50 Mbps = 6.25 MB/s
10 Mbps = 1.25 MB/s

Don't be too disheartened though about speeds, Netflix recommends 5 Mbps for HD, 25 Mbps for UHD, so you'll be okay.

Hardware:
  • Use Cat6 or Cat7 cabling every where if possible.  This can shield your equipment from both electrical and network interference.
  • Make sure your controller is the latest version.
  • Download the latest firmware updates for your access point.
  • To see current configuration go to: Settings > Maintenance > Support Info > Show System Config.
  • Perform an RF Scan to see what sort of interference is happening in the area (UniFi Controller, Devices section, clicking on the AP you wish to scan, and in the Properties Panel that slides out, going to Details > RF Environment, and clicking on RF Scan)
2.4 GHz:
  • DTIM (Delivery Traffic Indication Message) beacon from the default 1 to 3.
  • Never use AUTO.
  • HT20 MHz (Use Channel 1, 6, or 11 for the least amount of interference possible - See Image below).
  • Use Medium Tx power (This will help keep the area roughly the same between the 2.4GHz and 5GHz channels.

5 GHz:
  • DTIM (Delivery Traffic Indication Message) beacon from the default 1 to 3.
  • Never use AUTO.
  • VHT40 MHz (36 - 40, 44 - 48, 149 - 153,  157 -161)
  • VHT80 MHz (36 - 48,  149 - 161), Optional VHT80/VHT160 might decrease wireless stability, but increase bandwidth.
  • ​Avoid using DFS Channels
  • Use High Tx power

 Caution:
  • User groups can have bandwidth limits, use with caution.  (Settings > User Groups)
  • Your speed test through the controller software will be limited to that of the device it is on.  So remember, if your controller is on a Raspberry Pi you might only be limited to a few hundred Mpbs.
 
Testing:
  • Use iPerf from your laptop to your access point, from router to internet, and any connection in between if possible.​
    • iperf3 -c ip.of.the.server -P5 -t 30
  • Ookla Speedtest​
  • Fast.com
  • Test with multiple devices and understand that the nanoHD is 4x4, an iPhone 7 has 2x2,macbook pro with touchbar has 3x3, so the apple devices will be the limited device here.  Also the maximum rate described for the nanoHD is using all 4 antenna's, so anything less than that will be limiting the speed.
Resources:
https://help.ubnt.com/hc/en-us/articles/360012947634-UniFi-Troubleshooting-Slow-Wi-Fi-Speeds-
https://help.ubnt.com/hc/en-us/articles/115011813968-UniFi-AirTime-What-s-Eating-your-Wi-Fi-Performance-
​



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