Shipyard pulling is not really using the available capacity.
Its rather trying to operate on single-unsorted stacks.
This repeats until the 64 black advanced armor have filled the 56.000 block request......
- deconstruct a ship, with at least one stack that does not fit in the yard.
- have a large storage connected to the yard and enable ressource pulling
- on construction it does sometimes go in such an inefficient long term loop