@Clive_A Is there a way to get the log after power cycle?

We've had the ER707-M2 as our primary gateway to 2.5G LAN connection for a while with no problems, noticed very high latency to the WAN traced it to ER707-M2 very slow UI showed 99% CPU normal...

@David11 I ended up with blocking LAN->LAN with source AP destination !AP type ANY, and LAN->LAN with source AP destination Me type HTTP.

@JamesLu This seems to be the solution except you can't block all access to the router (aka Me), so I just blocked HTTP. https://www.tp-link.com/ca/support/faq/4025/

@MR.S I created a second LAN and associated VLAN for the port connected to my guest network wifi AP, seems to work, but the new LAN still can access the original LAN. Any way to isolate the two?

thank you.