@Rebellion158
Okay, I understand that after switching your main Deco unit from one model to another (in Access Point mode), you are noticing that your Android phones are experiencing slower Wi-Fi speeds than before, even though other devices like your notebook and iPhone are performing as expected. This issue seems to occur only with your Android phones when connected directly to the main Deco unit, despite testing right next to the Deco and enabling only 5GHz 160MHz.
To address slow internet speeds on your Deco Mesh network, please follow these steps to accurately measure and improve your connection:
Suggestions for accurately measuring Ethernet/Wi-Fi speed:
1. Use https://www.speedtest.net or the Speedtest app/CLI (https://www.speedtest.net/apps/) for reliable speed testing.
2. Verify your ISP/Modem speed by connecting a PC directly to the ISP modem/router.
3. For wired (Ethernet) speed tests, connect your PC directly to the main Deco. Ensure all Ethernet cables are CAT5E or higher, and confirm that the modem, Deco, and PC Ethernet ports support your subscribed bandwidth (e.g., 1GE ports for 500Mbps, 2.5GE for 2Gbps broadband).
4. For wireless speed tests, make sure your phone/laptop is connected to the nearest Deco unit and is using the high-speed network (5GHz/6GHz), not 2.4GHz.
5. When testing wireless speed, ensure no other devices are using high bandwidth (such as downloading or streaming video).
Possible methods to improve speed on Deco:
1. If Ethernet speed is slower than expected, try different Ethernet cables (CAT5E or above) and different Ethernet ports on the main Deco.
2. In the Deco app, go to MORE > ECO Mode and make sure ECO Mode is disabled.
3. Go to MORE > QoS and ensure QoS is disabled. If there is no on/off switch, set it to standard and remove all priority devices.
4. Go to MORE > Advanced > NAT forwarding and disable SIP ALG and UPnP.
5. Try testing with different Speedtest servers, as some may provide better results.
For more details, please refer to this FAQ: https://www.tp-link.com/support/faq/2429/
If you still feel your speed is slower than expected after following these steps, please contact TP-Link support and provide the results of your troubleshooting for further assistance.