Sorry if this bumps the thread, just updating to say I've solved the issue so if anyone has this very unlikely problem happen to them, they'll know what's wrong.
Turns out, the used video card I bought had previously been used for cryptocurrency mining, and had had a custom VBIOS flashed onto it. I ...

Hi there,
I don't remember exactly when this issue first started cropping up for me, but it wasn't happening a year ago.
Apologies for not asking for assistance sooner.
This only occurs when there are many belts with items on them on-screen.
I have attempted lowering all graphics settings as far as ...