PLEASE HELP! Need assistance and advice regarding Dimensions Rendering and Adobe Illustrator Files

Hi,

I am a final year student studying Graphic Design BA Hons. I am using Dimension to help show some 3D concepts for my packaging design project. However, I am having issues with rendering. When it finishes rendering, the surface graphics appeared blurred. The graphics put on the 3D model is an Adobe Illustrator vector. Is there a way to resolve this issue? Do I need to go into Photoshop and save it in a different format so it doesn't go blurring? Please help and advise.

Thank you!