Speed problem over wifi (ROS: 6.0 RC7)

I have internet speed download and upload 20mbit/s, 100mbit/s-can someone talk about what may prevent a reduction in speed of the router?


I’m doing the speed test wireless network, and the speed is only 21mbit/sec
I have a card 4965abgn
the router model: Routerboard 2011UAS-2HnD-IN

Give advice on what you should do in order to flow over wifi via a maximum

Thanks you very much

here you need to post more info.

Check Your Wireless stats. ccq, snr, etc etc. And try only n.

Do you Connect wlan-wlan (mikrotik) or somthing like Laptop-mikrotik.