Start with Model Hygiene, Not Hardware

Before you requisition new workstations, look at how your team builds models. Poor modeling practices create file bloat and computational overhead that no amount of RAM can fix. The patterns that cause the most slowdown are surprisingly common.

Unnecessary detail is the biggest culprit. Engineers often model threads, knurling, or tiny chamfers that add zero value to the design intent but force the software to track thousands of extra faces and edges. A detailed thread on a bolt might look impressive, but it adds geometric complexity that slows every rebuild and makes assemblies harder to load. The same goes for intricate textures or cosmetic features that won't appear on manufacturing drawings.

Feature trees also accumulate waste over time. Every failed sketch, suppressed feature, and outdated design iteration stays in the model history unless someone actively cleans it up. Long feature trees with dozens of suppressed or unused features slow regeneration and increase the risk of rebuild errors. Teams that audit and prune feature trees regularly see noticeable performance improvements.

Assembly structure matters just as much. Flat assemblies with hundreds of parts at the top level force the software to recalculate every mate and constraint on every rebuild. Organizing parts into logical subassemblies (motor assembly, frame assembly, fastener groups) reduces computational load and makes files easier to work with. Using lightweight or simplified representations for standard components like fasteners, springs, and purchased parts can cut assembly load times in half.

External references are another common trap. When parts reference sketches or features from other files, you create a web of dependencies that the CAD system has to track and resolve. Break those references or consolidate geometry into single files where possible, and you'll avoid the cascading rebuild failures that happen when one upstream part changes.