Yeah, that file has a tremendous amount of data in it. I broke apart one of the medallions, and what you have in there is an engrave on top of an engrave in each case.
If you combine the engraves and rasterize them, you’ll have a much quicker load. Currently the interface is treating each of those parts separately, which means it’s going to go in and engrave the grayscale triangles for one medallion, then start over and engrave the lacy overlay, then move on to the next one and do the same thing, then the next, etc. It will take a very long time to do it that way.
If you want to reduce the amount of data for the machine to have to buffer, ungroup everything, group the red cutlines and hide them, select each pair of engraves and combine it into a single raster (engrave) image. Unhide the red cutlines. (When you save the file, remember to Embed the images. )
Then in the GFUI, you will be given six separate engraves, and one set of cutlines. Use Manual settings to set the LPI to 195 on each of the six separate engraves. Set three of the engraves on the same row to Ignore. Also set the Cutlines to Ignore. Print (Engrave) the remaining three active images.
When those are done, without moving anything on the bed or the screen, set them to Ignore, set the other 3 images to engrave, and set the cutlines to cut.
Gradients are a lot of data, and those are a lot of gradients, over a large surface area. Breaking it up will let it load and process faster.
Hope that helped.