I have an Asus RT-AC66U with the Merlin 380.70 firmware, connected to it is my Virgin router (modem mode) and then 3 PCs and a PS4 Pro on the ethernet ports with Cat 6a cables. At random, any of the ports will randomly drop to 100Mbps instead of 1Gbps. Forcing the PC network adaptors to negotiate at 1Gbps does nothing. The only fix seems to be forcing the router to re-negotiate until it connects at 1Gbps, the easiest way I've found to do this is to just unplug and reinsert the ethernet cables until it eventually connects at 1Gbps.
Unless I'm missing something, the two most likely options are either all my ethernet cables are faulty or it's something to do with the router. Has anyone had any experience with problems like this? I'd appreciate some thoughts and advice.
Unless I'm missing something, the two most likely options are either all my ethernet cables are faulty or it's something to do with the router. Has anyone had any experience with problems like this? I'd appreciate some thoughts and advice.