Scalability

Hope someone can clarify a setup question.

I am building a simple architectural walkthrough to show on another good PC. I have ignored Mobile/Tablet and scalable 3d so it runs on Maximum settings.

It seems to run smooth, but wondered if there are benefits to setting it for Mobile/Tablet and Scalable 3D or 2D when you know its going to be viewed on a reasonable PC?

Also are there any tips to getting a sharper viewing experience when packaged for HTC Vive use? should I use Epic or Cinematic?

Thanks for any help!