Thanks, Papa, for clearing that up. Best switch all shadows off then and run in "Otto" mode.

Or never leave the cab and always look straight ahead, or only drive at night.

Ouch, my wallet already hurts thinking about a new laptop to run TS2014 at medium to full settings and 30 fps. And that laptop shouldn't burn a hole in my desk either ...
After reading many threads here and there I have come to the conclusion that Railworks isn't optimized for continuous laptop use. Only the most expensive gaming laptops can run games continously, and for the price of those I can buy two GTX780 card s...