I have a Nvidia GTX 1070 FTW graphics card on an Alienware R17 with an i7 6700HQ cpu and 32gb ddr4 ram
My best bet is video card issue
Welcome to the forum. I agree with Chris that your graphics card is likely the problem. See #13 at Frequently Asked Forum Questions for more information.
What version of SOLIDWORKS? Also are you running at a higher Windows Display Scaling setting (150% or higher)?
This looks like a classic display scaling bug. I tried an import in 2017 and I don't see that issue at high scaling, however.
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