Uploading wrong geometry

The component causing the problem in your model is the Deconstruct Brep from which you take curves for the Sweep1.

More on the subject in this part of the webinar, find more optimisation techniques in this blog post.

We also developed more efficient alternatives to Sweep1 and you can see how they work in the tutorial below, source files are in the video description on YouTube. The whole series and the webinar are definitely worth watching too if you want build great 3D apps on ShapeDiver.