Graphics Problem!

Hello RWA
Ever since I updated to TS2015 my game's never been the same. I have to turn off dynamic lighting and clouds, and keep all my settings on low because my laptop can't handle anything above low and i always used these settings on TS2014 and never had a problem. My game ran smooth and i had no complaints.
But now that i updated to 2015 some of my locomotives look dark and some come with an annoying shadow and some don't. and that also goes for the passenger coaches as well. Here's what I'm stuck with...




Is there any way to solve this issue??

Ever since I updated to TS2015 my game's never been the same. I have to turn off dynamic lighting and clouds, and keep all my settings on low because my laptop can't handle anything above low and i always used these settings on TS2014 and never had a problem. My game ran smooth and i had no complaints.
But now that i updated to 2015 some of my locomotives look dark and some come with an annoying shadow and some don't. and that also goes for the passenger coaches as well. Here's what I'm stuck with...




Is there any way to solve this issue??

