My factory is set up with:

2 Power Upgrades
3 Speed Upgrades
3 Construction Upgrades

This should mean a maximum of 12 construction streams. My factory is reported as high as 86 active nanites, and as such is completely destroying my ship's powergrid. When it does run out of power, all of the nanites turn red, and it begins queueing up and building parts, even though it has plenty. Once the active nanites have returned, the power usage drops, and it tries to go back to work, causing the entire sequence to repeat many many times. I manually set a limit of 15 nanites on the factory, and it is STILL sending out 60+ nanites.