I have 2 AntMiner S9's running. Each of them appears to be operating only at 4.9 TH/s. All 3 of the ASIC's appear to be in good shape, though each of the miners is only using a single ASIC board.
Key config items: 1. I am using Slushpool on one Antminer. I'm using Antpool on the other. The pools are showing at least one live pool server. 2. I see all ASIC's showing positive status. 3. They are set up in a pretty cool room (10-deg C) with sufficient power
I looked for support on this and I don't see it anywhere--is this a hardware issue? It looks like it isn't as the boards are all showing ok?