Does deleting sketches make complex assemblies faster?

[Personal_Playground]

I have a large assembly of a machine that takes forever to calculate and refresh.  I  have a decent computer (i7-9700K - overclocked to 4.9 GHz, 32G ram, running intel Optane...SSD drive) but this model has really bogged down the system.  I have deleted history on all parts and sub-assemblies.  The only other thing I think is available to do is to delete all the sketches ass the way down to discrete components.  Is this viable?  Does that make sense?

Thanks,  Rich

[jeff_strater]

@Personal_Playground - thanks for posting.  There are a lot of variables that can affect performance.  The first question is:  what operations are slow?  Viewing operations (View Rotate)?  Editing geometry (e.g. adding a Fillet to a body)?  Adding new components or Joints to the assemblies?  Saving or opening?

To answer your question more directly:  It depends what is in those sketches.  Some sketches can be slow, certainly, if they contain a lot of curves or large sketch patterns, etc.  If you have really turned off history for the design, then there is really no harm in getting rid of at least some of the sketches, since they are no longer connected to any features.  But, again, it depends what you are trying to do.  If you are just doing "assembly things" such as adding new components or new joints, then deleting sketches is likely not going to help.  But, if you are doing something like Compute All, it might help.

If you are willing to share your design, we can provide some more directed guidance...

[wmhazzard]

Only if you don't want anything to be parametric or need to figure out where you made a mistake. 

[Anonymous]

Hi Rich,

In a way, it can, but more than likely it's how your model is structured that's causing the slowdown. I have a computer with a similar spec (Intel I9-9900K also overclocked) and even on my most complex models my processor barely gets over 20% short of complex CAM operations. 

The best thing I have found for the zippiness of my models is to isolate everything into individual components. Sketches, modelling, modifications, etc. This stops the computer from having to recalculate your entire model history at once and instead, peace meals it out. 

[MoshiurRashid]

That will diminish all your ability to modifiy the design without direct editing method. I would suggest not to do it. Sketches are the heart of a design. And they doesn’t decrease your software performance.  

[TrippyLighting]

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@MoshiurRashid wrote:

That will diminish all your ability to modifiy the design without direct editing method. I would suggest not to do it. Sketches are the heart of a design. And they doesn’t decrease your software performance.  

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Unless, of course that aren’t fully defined 😉