RT-AC87U 2.4ghz & 5ghz wireless

Hi All,

I just bought a new RT-AC87U router.

I tried connect to 2.4Ghz and it was working fine with strong signal(4/4).

When I connect to 5Ghz, I saw the signal was not so strong (2/4) and sometimes the packet was drop.

I have tried update the firmware and the current firmware version is 3.0.0.4.378_5134.

Please advise any solution for this ?

Thanks in advance.
ZP