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Hitron CGN3AMF unusable 2.4GHz WiFi

VBD
I'm a contributor level 1
I'm a contributor level 1

Using 60/10 service for few months. No issues with cable connection (all parameters normal), no issues with 5GHz WiFi (7 x 802.11ac devices connected), but never managed to make 2.4GHz WiFi work as expected. It works well for about 1min after router restart and then slows down to about 2Mbps and stays there until next restart. 

 

- wireless channel is relatively clear (other routers as Access Point transfer >50Mbps on the same channel)

- tried both "Mixed" mode and "N Only", no difference

- tried both security settings WPA-PSK/WPA2-PSK + TKIP/AES and WPA2-PSK + AES, no difference

- tried to eliminate WiFi clients one by one to isolate client side issues, no difference

- tried resetting the Hitron and set it up from scratch, no difference

 

ASUS RT-N66U as Access Point has no issues whatsoever running both 2.4GHz and 5GHz WiFi networks.

ASUS RT-N12D1 as Access Point has no issues whatsoever running 2.4GHz WiFi network.

 

Something is not right on Hitron device. Firmware version is 4.5.8.17. Is it a known issue or I need call FIDO Customer Service and ask for device replacement?

 

Thank you!

 

***Edited to add labels*** 

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