So that's why a 2 systems were getting crappy speeds. Yes, 2. It had been used only to split a single drop from another switch between two systems.
New drop, happy clients.
Some stuff here is museum material.
"In the wall" is an exaggeration. It technically was behind a massive desk that tool a group to move.
Basically in a wall. At that same place I also found a consumer router and a switch in the ceiling handling everyones traffic. It was toasty up there.