Hello, I think it should run pretty well on that setup. Some of the maps will be more demanding than others. The least demanding are the Desert, Meadow and Racetrack Generator maps.
What you can do to get the best performance is to select a lower graphics quality on the main menu. Another thing that can make a big difference is to run the simulator at lower resolution.
You change the resolution by adding command line parameters to the exe file as described in the user manual. For example:
-screen-fullscreen 0 -screen-width 800 -screen-height 400
(will run the simulator in a 800x400 window)