I just started using SolidWorks 2018. The lines on the 3D models don't render very well (see attachment). I adjusted the display and image quality settings in SolidWorks but it didn't make a difference. I am using a GTX 1070 in Windows 10. I also adjusted the anti-aliasing settings in the nVidia Control Panel but that didn't help either. I have been searching for a solution to this for several hours and can't find anything relevant.
Is anti-aliasing enabled in SW?
Also your graphics card is unsupported for SW so this may be the first of many graphics struggles for you.