This is useful information for those who haven seen it yet.
https://helpcenter.graphisoft.com/technotes/video-cards/recommended-video-cards-for-archicad-21/#Lar...
I have had the NVIDIA P5000 now long enough to test it out and it is everything I hoped it would be and then some.
I don't know what is impacting how ArchiCAD works most, the card, the Xeon processor, or the 64GB of RAM, but ArchiCAD looks fantastic on my laptop.
this is a screen shot video capture does not do it justice but the 3D window is as fast as you can wiggle your mouse. This is over 150,000 polygons.
https://www.screencast.com/t/0ct5etjpD
If you don't have a fast internet it may buffer on you but it was super fast and smooth on my screen.
ArchiCAD 25 7000 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render 5.2.1.49- Multilight 2 - Adobe Acrobat Pro - ArchiCAD 6 -25