This has been happening for roughly 10-15 minutes every few days. No real set time that it occurs.
The internet from the ISP is 300Mbps but during those 15 minutes it will throttle down to ~50Mbps.
This happens for computers both physically connected and wifi devices.
My first thought was maybe the DHCP pool ran out of IPs but I'm seeing there are ~50 spare IPs at any given time. Don't see anything wrong in the DHCP logs.
Now I have started running Wireshark on the DHCP server hoping to find anything that looks out of the ordinary but the issue has not reoccurred after I started logging. What should I look out for?