Thank you for your help @Ivaylo and @Kevin_Z. The issue is resolved now. To all users from Germany that use Vodafone internet provider with their default router (Arris TG3442DE in my case), in order...

@Ivaylo The screenshots are done when the Archer C6 was in router mode. Yes, QoS is off right now. The wired and wireless device amount is correct too. When the duplex is set to auto negotiation the...

Hello, I've seen many posts regarding this Archer c6 problem but none of them have a proper solution for it. The problem is pretty much the same: the LAN ports are capped at 100 Mbit/s while the...