I’ve had similar issues on Linux only (but not on Windows). However I have two routers using the same SSID on WiFi for roaming. So it kept “scanning” trying to determine whether or not to roam to the next connection. This for me resulted in packets loss and high ping in games for like 10 seconds every 5 min. Maybe it will do these scans even if you do not have access to multiple of the same SSIDs?

For me the solution was to select the “BSSID” of the router I want to be connected to. It’s a setting under “advanced settings” if you drill down into the WiFi you’re connected to. If you have multiple routers as well you might need to experiment or otherwise understand which BSSI gives the stronger connection of course.