I’m sorry that you’ve run into trouble getting files to load and print. I see you’ve already received some excellent advice from other community members. Thanks folks!
I think your plan to group the circles in your design into a single engrave would be a great next step. I noticed in your file that each individual circle is an image with a resolution over 500dpi.
Your Glowforge can engrave with resolutions of up to 1355dpi. However, our software will process raster engraves up to a maximum size of approximately 30MP (megapixels). Of course, the maximum printed dimensions will be smaller for a higher-resolution image. For reference, a 4"x4" image is about 30MP at 1355dpi. Effectively, it rarely improves engrave results to use an image higher than 600dpi.
The above information about resolution for engraves may be helpful when you try grouping the objects in your design together into a single image. Please let us know how it goes!
I also saw that you had a separate forum thread regarding other designs loading slowly. Are you still running into trouble with any other designs from your library?