11AC的TX和RX差很大，高通的WiFi网卡

Question

/root # iw wlan0_ap0 station dump
Station e8:fc:af:a2:01:ab (on wlan0_ap0)
inactive time: 0 ms
rx bytes: 806698431
rx packets: 592207
tx bytes: 2763503886
tx packets: 1868211
tx retries: 0
tx failed: 0
signal: -44 dBm
signal avg: -43 dBm
tx bitrate: 6.0 MBit/s
rx bitrate: 866.7 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 2
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no