Nice work on the Rig, looks really sharp and that is going to make quit a difference.......
I don't know if it was mentioned?, but make sure when you run Trainz, turn off Win Drive Indexing Functions, and backup programs.
Turn off your network connection too, this all helps give the highest % Memory and CPU cycles free for giving T:ANE a fair shake when demanding performance.
These are just suggestions, and up to you for preference.
Respectfully yours, Blue
HPEnvy Core I-5 SSD Cpu @2.20Mhz 16Meg DDR3 Ram Graphics 5200 Resolution 1920x1080@32bits