The only thing that I find a bit weird is that X is hitting 80% CPU usage on the main menu immediately after starting the game. Which _really_ shouldn't be pushing things hard at all.

I'm seeing something similar to this, but it's X that is spiking high on a single core. I saw it happen once on 0.15.1, but now I'm on 0.15.2 it seems to be happening near constantly. Never had any issues like this in the 200+ hours I've played in the last month on 0.14.x. What seems odd is that the...