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There are a lot of things that affect performance for large assemblies..
With respect to graphics card, you really need an nvidia quadro workstation grade video card.
there are many suggestions here: https://www.ptc.com/en/support/article/CS133707?_g
There is a good presentation download here: https://community.ptc.com/t5/PTC-Community-Networking/Bringing-Large-Assemblies-Down-to-Size/m-p/444618
If I am just trying to view and find model names, I use Creo view to help navigate, it is way quicker to open and get basic information from a model.
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