So I was running 5 s9s for a while with no issue till I decided to get 5 more. When they first were shipped and setup 4 out 5 of the new ones started having low hash rate issues almost as if one or two hashboards wouldn't work but all the boards are lit up. After months of constant diagnostics I've noticed that the super low hash rate issues kept on moving from one miner to another and after discovering the issue i'm being throttled. If I have more than 6 miners hooked up then the remaining after 6 miners will have very very low hash rates most would have only one board working even though all boards light up. Since I am with at&t uverse and discovered that there was reported bitcoin mining issues with them in the past I decided to install ddwrt on my asus ac3100 which did nothing. After that (what I thought to be an obvious fix) I added an openvpn to the router and that didn't fix it. I'm so far all out of options here. I can't use the latest firmware because anything from about 2 months to now I will get connection refused on every miner I install the new firmware with. I am using an asus RT-n12 for my wireless network. I did try using two different connections and still same issue.