I don't know if this is affecting Trainz in any particular version or not, because it is apparently related to Unreal engine, but interesting article anyway:
https://arstechnica.com/gadgets/202...game-crashes-on-top-end-core-i9-desktop-cpus/
https://arstechnica.com/gadgets/202...game-crashes-on-top-end-core-i9-desktop-cpus/