Just a helpful warning to the rail folks, if you play this scenario and save. When you relaunch you may have the Ice and Snow start to disappear in the span of about 5-8 min. This happened to me a couple of times. Do not know if it happens on other snow scenarios. I did report the bug to DTG. If you play it without saving, you will not have an issue. I played it for about 30min with no issues. Only when I loaded my save. When you see the snow disappear, if you save and relaunch, beautiful snow is back.....for about 5min.