So I think I have gotten to the bottom of my problems.

I plugged in a few more machines today and heard my massive ventilation fans bog down. I unplugged a few S9s and heard the fans pick back up. I repeated similar tests like this.

I am pretty sure that the City is not supplying me with enough power to run my operation... This makes sense since I melted their power lines last year outside and they had to replace them. They have a weak link somewhere so I can not get the full 300amps I need to keep running all my machines.