@NetizenRe You can set up a mesh with your router in two different ways: 1) OneMesh 2) Deco Mesh You can see the differences in this article. Since you are targeting an ethernet backhaul it's better...

You can troubleshoot by moving RE305 closer to the router (if possible) and see if the issue persists. Another option is to look at the devices logs and see if any details regarding the issue.

@dudload Make sure you are with the latest drivers for you PCI-E card and the latest FW for the router. If you recently upgraded your router FW, do a hard reset (Method 1) and re-configure from...

Check if you have set up a reboot schedule on a weekly basis. Upon reboot the router resets these statistics.

Try to hard reset (Method 1) the device and reconfigure from scratch.

@drop You can view the device logs for potential issues recorded. If you recently upgraded the FW try to hard reset (Method 1) the router and reconfigure from scratch - that can help too.