run0 flapping on rpi4b connected to usb2 port

Hi,

context: rpi4b arm64 main-n267804-3883c6fbf232-dirty 1500012 1500012 

run0: <Ralink 802.11 n WLAN, class 0/0, rev 2.00/1.01, addr 3> on usbus0
run0: MAC/BBP RT5390 (rev 0x0502), RF RT5370 (MIMO 1T1R), address [mac address goes here]
run0: [HT] Enabling 802.11n

wlan0 flaps for no reason - no appreciable load at these times either on the
machine or on the wlan network. In terms of electronic noise, the area it's in
is rural.

from /var/log/monit.syslog

45696: [2024-02-06T00:08:16+0000] info     : 'wlan0' link up
46211: [2024-02-06T01:34:35+0000] error    : 'wlan0' 8 upload errors detected
46216: [2024-02-06T01:34:35+0000] info     : 'wlan0' download errors check succeeded
46242: [2024-02-06T01:38:08+0000] error    : 'wlan0' 1 download errors detected
46250: [2024-02-06T01:38:38+0000] info     : 'wlan0' link up
46429: [2024-02-06T02:08:04+0000] error    : 'wlan0' 2 download errors detected
46437: [2024-02-06T02:08:34+0000] info     : 'wlan0' link up
46442: [2024-02-06T02:08:34+0000] error    : 'wlan0' 2 download errors detected
46450: [2024-02-06T02:09:05+0000] info     : 'wlan0' link up
46479: [2024-02-06T02:13:08+0000] error    : 'wlan0' 1 download errors detected
46487: [2024-02-06T02:13:39+0000] info     : 'wlan0' link up
46519: [2024-02-06T02:18:12+0000] error    : 'wlan0' 1 download errors detected

The *ethernet* port doesn't flap at all.

Is there an issue with freebsd&wifi on this arch, and/or one with the wifi
adapter? or something else? How to debug? thanks in advance for any assistance
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