Xiaomi phone low Wifi TX rate

[nemoforum]

This issue is related to the chipset incompatibility between what we use in our devices, and the chip in these phones. There isn’t much we can do.
Newer devices, such as hAPac^2 and cAPac do not have this issue anymore.

Okay, I followed your recommendation and got another issue http://forum.mikrotik.com/t/hap-ac-lan-wifi-5ghz-performance-issue/118005/1