- Wireless is a shared medium. That means that devices can affect the performance of others.
- Wireless drivers can play a part in performance. If a wireless card does not perform well at a specific rate, the AP and the client will negotiate to a lower rate to possibly improve performance. You should then try to upgrade drivers to improve performance.
- Those devices that are at low speeds could be leaving the coverage area or dormant, and that will produce those low speeds.
- Your channels have an "E" after them, which means 80 mhz, which means it is 4 channels bonded together. It is possible one or more channels have interference.
- You should have your device in your hand to ensure that it is not too far away and it is not in an impaired state.