Its grayed out.
What video card are you using? Are you running SolidWorks in OpenGL mode?
Nvidia 5200M. Where is my option to run in Open GL?
your video card doesn't support real view graphics...Graphics Card Drivers | SOLIDWORKS
Just because your Graphic Card is not listed to support RealView doesn't mean it wont!
You may want to try this reasonably simple Registry change! Please read the warnings. There is no guarantee but it is simple to try.
You Don’t Know What You’ve Been Missing until you get it Back! – RealView #solidworks | Michael Lord
Absolutely brilliant link - just done this workaround on v2016, to get RealView working on a NVIDIA GeForce GTX 660.
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