Drawing Performance - CPU or GPU?

I have a model of one of our production lines.  It's a pretty large, slow model:  8257 total components and 114 top-level mates.  I can tolerate the slow performance of the assembly, but when I create drawing views that show hidden lines, SW takes forever to generate them.

My question:  Is the generation of drawing views governed by the CPU or GPU?  Would a graphics card upgrade help or is it all about the processor?

SolidworksAdministration