wifi router resetting

Just here to say I'm really tired of my wifi router resetting itself every other day now. I already took one back and got it exchanged and now the new one is doing it too. Is this issue actually fixed yet so if I get another it will stop? I'm tired of having to reconnect all my devices, home security cameras etc. Plus when it does this early morning or middle of the night I feel unsafe. 

It powers off then back on and resets wifi router completely and I have to scan the QR code again and change the network name and passwords and then with my camera I have to reset them individually and have them scan QR codes too.