I did email tech support with my current setup and issues, they reply back that tp-link touch P5 are rated for 50 devices. They also said with the Google Chromecast crashing networks issues my two routers were not reported as having issues. So they suggested leaving my SR20 for wireless devices and the P5 for the wired hub devices. It's been very stable this way for 2 weeks now just wish I had one router that can handle it all. FYI they did say the tp-link 3150 is rated for 50 devices also but the C7 and C9 (which I have in a box) is rated for 30- 40 devices