I am trying to export a very large base map into Rhino (so that I can run a grasshopper script I have generated). When I export to a pdf, I realize that ArcGIS Pro isn't exporting out large regions (water is the most prominent example) as one solid, but rather thousands of tiny squares. This is leading to the pdf being unnecessarily large in file size and putting way too much strain on rhino to process. Maybe there is a checkbox or something that I am missing or maybe there is a better way to export. Rhino can read pretty much any vector format (.dxf, .dwg, .eps, .pdf, .ai, etc.)
I did find this in another forum (Export to CAD—Conversion toolbox | ArcGIS Desktop) but I could not figure out how to work this. Please help.