Yes, the fact that they are conveyors seemed to be the cause of the glitch. For whatever reason hoppers seemed to like skipping the first conveyor they output on, meaning they effectively skipped the machine itself and were immediately outputted as the manufactured product. Anyways thanks for your help!

I don't know if they are moddable.
But even if they are moddable I won't be able to do anything because it's not in the .xml files.
I don't mess with other files because you need some sort of programm.

You can ask the modders who do advanced mods like mad vandal or steveman, they might know if those machines are moddable and maybe they will make such mod.

Also I heard that those machines act like conveyors :D If it's possible to speed up them then probably it will be possible to speed up any other conveyor too. (transport pipes are conveyors too)

Would there be a way I could speed up only the manufacturing plants? Waiting for coils etc is a pain and in my new campaign I don't have the research to craft conveyor belt filters to filter out lithium, and I dont have enough mining to justify having an entire belt and smelter system only for lithium at this point. There seemed to be a glitch recently where the manufacturing machines functioned as fast as a hopper next to them could output, and I really enjoyed it, and hoped it was part of the base game (even though i knew it was a glitch). Alas, DJArcas fixed it rather quickly, and I want it back. I would much rather be able to craft coils and wires quickly (but not self-crafting, thats too cheaty even for me), as I dont have the materials to craft loads of coils/wires in advance and would raher only craft the amount that I need and maybe a few extra if i have spare materials.

@Wariat117 Thank you so much for answering my question!

I use the name that is in-game files :D (special folder called "GenericAutoCrafter")
Almost everything that makes 1 thing is generic autocrafter.
All missiles. machine blocks, chargers etc etc are GAC.
Paste grinder is GAC too.

I am sorry maybe I am tired or just dumb but what are the generic autocrafters? the only one I think of as generic autocrafter is the manufacturing plants since they genericly make everything. otherwise other then the vat everything i can think of only makes one thing. I am sure this is a game specific desription but I cant find any documentation on the term GAC or general auto crafter

It only affects the generic autocrafters.
It doesn't affect manufacturing plants.

does this only effect the manufacturing plant?