ath0 (Atheros AR946x/AR948x) timeout issues

Hello,

After all the info i gathered about ath having best WIFI support, i 
bought a card only to experience constant timeout issues and terrible 
performance. Below is some useful info, any ideas appreciated. The PC 
and it's antenna is ~12m @ LOS from the AP. All other WIFI devices in 
house work great.

Qualcomm Atheros AR5BMD222 Wireless Network Adapter
FreeBSD 15 @ ~2 days ago from master branch.

#rc.conf
create_args_wlan0="country US regdomain FCC"
wlans_ath0="wlan0"
ifconfig_wlan0="WPA SDHCP"

#wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant

network={
   ssid="SSID_redacted"
   psk="PSK_redacted"
}


ath0: <Atheros AR946x/AR948x> mem 0xdf600000-0xdf67ffff at device 0.0 on 
pci8
ath0: [HT] enabling HT modes
ath0: [HT] enabling short-GI in 20MHz mode
ath0: [HT] 1 stream STBC receive enabled
ath0: [HT] 1 stream STBC transmit enabled
ath0: [HT] LDPC transmit/receive enabled
ath0: [HT] 2 RX streams; 2 TX streams
ath0: AR9460 mac 640.2 RF5110 phy 0.0
ath0: 2GHz radio: 0x0000; 5GHz radio: 0x0000


[255] ath0: device timeout
[287] ath0: device timeout

^ This repeats hundreds of times, network is unusable during these reports.


[mike@fbsd15 ~]$ ifconfig -m wlan0

wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=0
capabilities=0
ether c0:38:96:39:66:f5
inet 192.168.100.180 netmask 0xffffff00 broadcast 192.168.100.255
groups: wlan
ssid BluePill channel 149 (5745 MHz 11a ht/40+) bssid 40:ae:30:fc:e2:3d
regdomain FCC country US indoor ecm authmode WPA2/802.11i privacy ON
deftxkey UNDEF AES-CCM 2:128-bit txpower 23 bmiss 7 mcastrate 6
mgmtrate 6 scanvalid 60 ampdulimit 64k shortgi -uapsd wme burst
roaming MANUAL
parent interface: ath0
media: IEEE 802.11 Wireless Ethernet MCS mode 11na
status: associated

supported media:
media MCS mode autoselect
media MCS mode 11ng
media autoselect mode 11ng
media MCS mode 11na
media autoselect mode 11na
media DS/11Mbps mode autoselect
media DS/5.5Mbps mode autoselect
media DS/2Mbps mode autoselect
media DS/1Mbps mode autoselect
media OFDM/54Mbps mode autoselect
media OFDM/48Mbps mode autoselect
media OFDM/36Mbps mode autoselect
media OFDM/24Mbps mode autoselect
media OFDM/18Mbps mode autoselect
media OFDM/12Mbps mode autoselect
media OFDM/9Mbps mode autoselect
media OFDM/6Mbps mode autoselect
media OFDM/54Mbps mode 11g
media OFDM/48Mbps mode 11g
media OFDM/36Mbps mode 11g
media OFDM/24Mbps mode 11g
media OFDM/18Mbps mode 11g
media OFDM/12Mbps mode 11g
media OFDM/9Mbps mode 11g
media OFDM/6Mbps mode 11g
media DS/11Mbps mode 11g
media DS/5.5Mbps mode 11g
media DS/2Mbps mode 11g
media DS/1Mbps mode 11g
media autoselect mode 11g
media DS/11Mbps mode 11b
media DS/5.5Mbps mode 11b
media DS/2Mbps mode 11b
media DS/1Mbps mode 11b
media autoselect mode 11b
media OFDM/54Mbps mode 11a
media OFDM/48Mbps mode 11a
media OFDM/36Mbps mode 11a
media OFDM/24Mbps mode 11a
media OFDM/18Mbps mode 11a
media OFDM/12Mbps mode 11a
media OFDM/9Mbps mode 11a
media OFDM/6Mbps mode 11a
media autoselect mode 11a
media autoselect mode autoselect
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>