High latency on LAN but not WAN

My wife's windows 11 laptop is showing some very odd networking issues lately. One of the major symptoms is that she has major latency when connecting to local resources on our LAN. This includes both a local Minecraft server and a raspberry pi. I can connect to both devices perfectly fine with very little issue. She does not see similar issues when connecting to remote resources such as a Minecraft Realm or any streaming services.

Does anyone have any ideas what I should be looking for to diagnose the issue? We have run a windows defender scan and ensured it is up to date with windows update.