They're getting choked out somewhere. That's about the speed one would expect from 200MHz. Try setting them at 200MHz and see if it stays about the same or goes down.
My guess is, you'd have to divide them amongst two controllers or something in order to get full throughput (and about 107GH) to all devices.
I have the six connected to a powered usb hub. i removed 4 now there are 2 connected to that hub and they seem to perform better. im guessing the hub's throughput is the bottleneck.
when i get home i will plug another 2 directly into the old laptop that i use as a controller and see whats going to happen. ill also try using 2 cheap unpowered usb hubs and see whats going to happen. (like the ones at '$2 shop' or something')
I did notice a slight increase when I switched to the PCIe connector instead of the barrel connector. More stable current to the chips maybe?
It also does fluctuate for me but not that low and the fact that all of yours are around the the high 80GH/s to low 90GH/s would not mean "luck of the draw". I would try to separate just one miner on it's own system/controller to see what it ramps up to. That way you can rule out that it's the POD but maybe the controller.
i do run them via a PCIe connector. Corsair GS800 to be more specific, although i still dont know if i should buy of those kits from parallel miners that comes complete with the server psu, breakout board and cables. i mean whats the difference right? even if on paper it can deliver more watts to the pods, the pods themselves cant handle more maxing out at >250mhz (in a stable manner) :thinking: aside from other things like longevity of the power supply and all that other stuff
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