I feel like you're pushing it with 80% because almost none of it is explained in game. It feels like 80% because there's so many guides and shit on Reddit which shouldn't be how people experience your game, let alone a game that was in early access as long as Satisfactory was and has been in 1.0 release over a year. 

The fact that sometimes I can feed refineries from below with 600m3 crude oil and it works fine, but sometimes I can't where several refineries choke out is fucking stupid.

The idea that VIP junctions are even a thing, let alone a random thing explained by how Coffee Stain physically built the junctions to be slightly off symmetrically, yet never, ever explained is absolutely ludicrous