@TheNoise Yes, I would suspect the ISP issue. One more thing though before blaming your ISP. You didn't mentioned what 's your AX20 WAN connection PPPoE or Dynamic IP ? Can you ping the Spectrum...

@Gia_Long Hey, It's quite possible when in AP mode, that the negotiated speed between the root router LAN port and the C2 LAN port is 100 mbps instead 1000 mbps. Check this on your root router...

@TheNoise From AX20 point of view - yes, if it's a public IP address then that would be the perfect test to check the stability to your ISP network. If it's a private IP address: then you have to...

@TheNoise I've meant any records in the System Log that may lead you to the issue, but obviously there's nothing in there during that time. Disabling OneMesh if you don't use it is a good idea. You...

@TheNoise Have you change anything in your router configuration or done a FW update (most probably) before the issue appeared ? By changing the DNS addresses, did you mean for the Internet connection...

@Mr.Dot Usually when ISP provides the service with PPPoE session there's no need to clone the MAC address, but it won't hurt if you did that already. Probably there's something wrong with your...