XCAM2 Video Quality and Network Selection

I recently got 3 new XCAM2 cameras to replace my Nest IQ indoor cameras, but I have run into issues with the XCAM2's. When viewing the LIVE feed, I get very poor video quality along with horrible audio playback. The video is very grainy and I cannot understand a word being said that the camera picked up. I come to find out that the xcam2's connect to 2.4ghz band. From what I was told, the new xcam2's support both 2.4ghz & 5.0ghz? 

How can I got about having my cameras connect to 5.0ghz band? 

Any help or advice, will gladly be appreciated.