v2. I've already changed the frequency and the channels btw. Security settings is all WPA2 PSK. Stability is much higher on the 5GHz band, 2.4 GHz not so much

I did upgrade the firmware, and there are around 4 devices connected to the 2.4GHz band and 2/3 to the 5GHz band.

Model : Archer C5 Hardware Version : Not Clear Firmware Version : ISP : I recently bought an Archer C5, but I'm experiencing 2 problems that I was were the reason I wanted a new router in the first...