I’m sorry, what do you mean with conflicting IP addresses? I’ve made sure to run the ISP router -> EdgeRouter connection on a different Subnet, and the EdgeRouter is the only device connected to the ISP router.
I’ve run a ping test for a while from the EdgeRouter, but I can’t seem to be able to replicate my issues during a ping test unfortunatly. It’s really quite puzzeling me
if two devices in the same LAN have the same IP address, sending host or switch gets confused to tries to sent packets to the wrong receiving device. this can cause long periods where devices seem to “drop off” the network, or only get some of the packets they are expecting.
if you have no issues with device-to- device connectivity (e.g. large, long lived files transfers between your PCs are fine), then its likely not the problem.
Conflicting IPs on your LAN can cause things to stop working but fix itself fast enough you don’t catch what is going on. I mention it because it just happened to me. I had a static IP set but didn’t realize it was within my DHCP range.
However I was able to eventually catch it with a long running ping test.