My gut tells me that the cost of quantum processors - in particular the cost in holmium - is too high. I remember in SE that they weren't cheap, but I still feel they are WAY more expensive here given what they are actually used in, and the added HCP intermediate, which doesn't take productivity, as neither do the superconductive cable or the quantum processors.
But once I automate things, they will get made, at some speed.
My annoyance was at having to kludge together 600+ science which wasn't expected to unlock some key technologies before I start laying my endgame orbital base. (Which I didn't get BTW. tier 3 bio and this advanced composite science are just too expensive for a hand fed kludge, so I will build around endgame data card recycling, and advanced servers, and then downgrade it to the level I have actually unlocked, fluids and all).
FWIW, I ran into the same issue as this when I wanted to unlock the wide area beacon. Which I thought was due to the energy control unit. Maybe it was the energy crystals which go into that? Or it has been fixed since. Either way it was a while ago so I can't remember, but I do remember being very frustrated that unlocking it was not close to being able to actually build it.