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I have a strange problem over Wi-Fi on my TD-W8970 Router
When I set the Wi-Fi settings to N only mode the internal data transfer speed becomes very low like less than 1Mbps
And when I change this setting to b/g mixed mode it works with the full g speed and reached the 54Mbps normally
I have tried to change the channel ( all 13 channel) and the wave length from 20GHz and 40GHz and with no difference at all
Also I have upgrade the firmware to the latest version TD-W8970(EU)_V3_160816 with no solution
Noting that no overload on the device as it has total 3 Wi-Fi devices only connected
And no interference effect as it is the only N mode Wi-Fi used in the location
I urgently need the full 300 Mbps speed as I need to move large files between the devices on daily basis