Assembly parts are gray until moving view

After importing a rather large step file into Solidworks and saving it as a .sldasm, the entire assembly is gray until I rotate the model. The color will pop on for a second while I continuously pan, but will return to gray after I stop. I need to import this part into Solidworks visualize to do renderings, but Visualize sees it as a solid gray color. How can I make my model full color like when I am panning?

See pictures below.