I use the Lenovo P52, and im very happy about it. I dont use simulation, and its rare that i need to render stuff. It works perfectly for me, fast performance, smooth graphics and a nice quality laptop!
People say the xeon are better and faster for CAD, check this link: Xeon vs i7 – What’s the difference? | Velocity Micro Blog
Lenovo P52 mobile workstation with Nvidia P3200 With Max Q-design, I7 8850H, and 32 GB ram
This is a benchmark from today with the newest drivers supported by SolidWorks.
Hope this helps you