Tried disabling Steam Overlay (and Steam Input, for good measure) and game still crashes on 2.0.15.

I didn't have any controllers connected to begin with, but I can try disabling the Steam Overlay. I can also confirm that this issue still affects 2.0.14.

Placing a ghost underground pipe between two real undergrounds disconnects them.
I can provide the testing save if need be, although it seems to work anywhere.
(Also, the tank is completely empty so there's no fluid mixing shenanigans)

Chunky Mk. 4

RHT - 4 tile spacing
Size - 96x96 (3x3 chunks)

Originally built for 2-4 trains for easy comparison with the ones in the list, I've also tested with 2-8 trains, as that's what I'll end up using.
Test Results
Size | Set 1 | Set 2 | Set 3 | Score
2 - 4 | 101.79 | 106.42 | 113 ...

Since updating to 2.0, I've been getting random crashes, all with the same log messages (most recent log and memory dump are attached). They have been happening during all phases of the game (I even had one during the initial startup load when booting the game). Despite what the logs may claim, I ...