@DieGar The RE315 region should not be a problem - check this post. When the ethernet connection is unplugged the ethernet backhaul falls back to a wireless backhaul so try with another ethernet...

@Tone42 Archer C9 is an end-of-life device and if this is an issue on its FW level it's highly unlikely it would be fixed in the furure. A delay relay circuit on the router 12 V power line should...

@Based_On_Cringe This sounds pretty much expected since the wireless connection has a half-duplex nature and on every hop it halves the bandwidth - 1'st hop (14 mbps) => 2nd hop (7 mbps). You'd get...

@Val1969 If you changed your main router then you should reset RE220 to its factory defaults (press reset button for about 10 seconds) and re-configure from scratch.

@Prash83 If your WA850RE is HW v7 (that's on its bottom sticker) update it to its latest FW version from here and test if there's an improvement.

@Tone42 There's no way to delay the router reboot time. If the router has an auto-reboot schedule feature you can use it to schedule a reboot (not sure if C9 has this implemented). In general if your...