flash Fresh Tomato on the R7000. It is a 3rd party firmware and works absolutely beautifully on the R7000. I have this exact setup.
https://www.freshtomato.org/
If you have problems or need help check out the Fresh tomato forum at https://www.linksysinfo.org/index.php
Fresh Tomato unlocks an amazing amount of features and increased performance on your R7000. You can increase the wifi transmitter power, unlock extra wifi channels, setup various vpn protocols, router level ad blocking, etc. Trust me just give it a try. If you need any help send me a pm.