Debug wifi freezes coinciding with log events

I'm experiencing occasional brief connectivity glitches (several times per hour) that appear to involve the device switching between 2.4G and 5G. (The events coincide with the router log showing an "update" involving the corresponding device MAC/IP.)

Symptoms such as all feeds in a (Teams) group video call freezing simultaneously for a few seconds (then resuming), or mobile devices reporting a lack of internet access via the wifi connection (with browsers/apps temporarily failing to load data from servers). Seems to affect multiple people/devices (connected to the same wifi router) at similar times. Seems alleviated by restarting the router every day or so.

In the logs, the frequency of the "update" event appears related to how much traffic the device was consuming. (Happening far more frequently during video calls, and rarely at all during hours of sleep.) It is not uncommon to see multiple "update" lines for different devices at the same timestamp. When the event is logged repeatedly for a particular device, it shows the assigned address is not changing. The WAN uptime is not reset.

Wifi router is a HWG2025 connected to Australian NBN FTTP, accessed by Windows and iOS devices. (The router menu has no scheduled reboot feature.) The log format is:

<date> <hh:mm:ss> [wlan][INFO]: LAN: update <hostname>(<MAC>) ip <ipv4>

Question update 1: These events correlate with DHCP events. On a windows device (in Event Viewer: Applicatons and Services: Microsoft: Windows: Dhcp-Client: Admin events) there is a corresponding pair of 50067 (received SSID) and 50065 (SSID cache match) "address configuration state events". (The pair are logged for the same second, and usually a second or so before the router logs the update event.)

Question update 2: In the router logs, the update events also appear to be just preceded by disconnect and reconnect of the device (i.e. switching between 2.4G and 5G), corroborating connectivity gaps of about 3 seconds duration. (These are reported in "mesh" logs amongst copious noise.) Similarly in the device logs (Event viewer ... Windows: WLAN-AutoConfig: Operational logs) there is a 11004 (Wireless security stopped) about 3 seconds before 11010 & 11005 (Wireless security started and succeeded) events.

What does this log indicate, and how to debug or troubleshoot further?

This is likely due to band steering.

If 2.4G and 5G networks have the same SSID, the device can attempt to automatically pick which to use, and the router can attempt to automatically nudge or force devices to change their choice. (For example, the device may perceive a stronger 2.4G signal due to obstacle penetration, whereas the router may perceive less congestion and higher potential throughput via 5G.) This explains why it may tend to be occurring during elevated network traffic. Unfortunately, switching here appears to be incurring a few seconds of lost connectivity, which is unacceptable if it is occurring whilst teleconferencing.

Band steering can be disabled in the router menu, or the client device can be configured with a preference (e.g., to stay on 5G), or the two networks can be given different names (apparently preventing band steering).