I have 2 routers in the house, one of them receives the signal from the internet provider via fiber optics (this router has no problem), I have the other connected to another end of the house (this is the router in question, TL -WR840N). I have the main router connected to the other via Ethernet cable. This week I started receiving only 100mbps (my provider gives 200mbps). I tried connecting the Ethernet cable from the main router directly to my computer, there I verified that 200Mbps does travel through the cable, the problem is when it reaches the TL-WR840N router. This problem is new, previously it gave 100% signal.