so updating to the new version, I've noticed that my matter fabricator is going about 10 times as slow. Did they get nerfed again and I might need to change something in my configs to put them back how they were?
Nothing has changed with the matter fabricator. Did you change a config yourself before the update? Pack updates are notorious for resetting your config files. If not then there is something wrong with your power grid or you are imagining things.
Probably something wrong with my power grid then, something is eating the power from my field of ultimate hybrid panels, and my two recyclers (almost always filled from a quarry) are putting out scrap faster than three fabricators can keep up with.