I tried to post this earlier, but it didn't show up, so apologies if it suddenly shows up twice.

I'm having an issue that seems to center on ARP entries; I'm not sure if that's a symptom or the cause. I've been using my Archer AX11000 for about a month.

I first noticed the issue when I was unable to RDP into my Windows 10 PC from my MacBook, and also discovered I couldn't get to Plex. When I looked at the ARP table on the MacBook, the MAC address was listed as "incomplete" rather than reflecting the actual MAC of the PC. There was no entry at all on the Windows PC for the MacBook. Both devices seemed to be able to access everything else, including the internet, without issue. Adding a static ARP entry on the MacBook did not resolve the issue. I had to add static entries on both devices in order to get connectivity back. Both devices have static IPs and are connected wirelessly to the first 5GHz SSID.

Though not ideal, I was OK with that workaround until I could get it resolved. This morning, though, my wife tried to print something, and the printer was showing as offline, though the printer's status indicated that it was connected. I tried to connect to its web interface from my MacBook and, sure enough, the MAC showed as "incomplete." The only way to resolve it (since I can't add a static ARP entry on the printer) was to reboot the router. That also temporarily resolved the initial issue, but only for a period of a few hours, and rebooting it multiple times a day is not a feasible solution.

There's nothing particularly complex about my network, and nothing like this issue ever occurred with my previous router (a Linksys EA9300). Turning on ARP binding did not help.

Any assistance would be very much appreciated.