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Optimising UniFi Performance

ยท 3 min read
Adrian Mace

Introduction

Below are the key settings that I apply on any UniFi installation for optimal performance.

While this guide makes some opinionated assumptions, I have observed these settings improving reliability and performance across a large number of customer sites and hardware.

The following assumptions have been made:

  • You are located in Australia
  • You have multiple U6-Lite access points.
  • They are positioned appropriately per a professional site survey.
    (With a goal of -70dBm cell overlap signal)
  • You are using the latest controller software as of time of writing.

Settings

Settings > WiFi > YOUR-NETWORK-HERE > Advanced

  • Ensure UAPSD is enabled
  • Ensure BSS Transition is enabled
  • Ensure Enable Fast Roaming is enabled

Settings WiFi > YOUR-NETWORK-HERE > Advanced > Security

  • Ensure Security Protocol is set to WPA-2
  • Ensure PMF is set to Disabled
  • Ensure Group Rekey Interval is configured appropriately:
    • Group Rekey Interval: Enabled
    • GTK Rekeying every: 3600 seconds

Settings WiFi > YOUR-NETWORK-HERE > Advanced > 802.11 Rate and Beacon Controls

  • Ensure Override DTIM Period is enabled
    • Ensure DTIM 2G Period is set to 3
    • Ensure DTIM 5G Period is set to 3
    • Ensure 2G Data Rate Control is disabled
    • Ensure 5G Data Rate Control is disabled

Settings > Systems Settings > Maintenance

  • Ensure Automatic Firmware Upgrades is enabled

Settings > System Settings > Backup / Restore

  • Ensure Backup Scheduler is configured appropriately:
    • Every: Month
    • On The: 1
    • At: 12 0 AM
    • Data Retention Days: Settings Only
    • Maximum number of Files: 6

Settings > Advanced Features > WiFi AI

  • Ensure WiFi AI is configured appropriately:
    • WiFi AI: enabled
    • Frequency: Daily
    • Scan Time: 5 30 AM
    • Advanced Settings > Exclude 2.4GHz Channels:
      2, 3, 4, 5, 7, 8, 9, 10, 12, 13

Devices

Complete this section for each access point you have.

Devices > YOUR-ACCESS-POINT-HERE > RF

  • Ensure the 2.4GHz Radio is configured appropriately:
    • Channel Width: HT20
    • Channel: 1, 6, or 11
    • Transit Power: Auto
    • Enable Minimum RSSI: Disabled
  • Ensure the 5GHz Radio is configured appropriately:
    • Channel Width: HT80
    • Channel: 36, 40, 44, 48, or 153
    • Transit Power: Auto
    • Enable Minimum RSSI: Disabled
  • Ensure Band Steering is set to Prefer 5G