I have some very large assemblies I have to take to drawing, they are running very slowly, I am spending a lot of time waiting for Solid Works to respond, I have tried Speed Pac and this greys out all the lines I want some of the lines to be bold, how would I get the lines in the view to show bold? and any advice on getting the software running quicker in the large assemblies, they run fine in Solid Works just dog slow in a drawing.

the assemblies are derived from point clouds from a faro focus 3D scanner, the smallest assembly is around 6000 parts.