Hi there Tony. My name is***** would be my pleasure to assist you with this. I'd like to begin by suggesting that you save the file to your computer and work on it locally, uploading it to Adobe Creative Cloud using the Cloud as a backup or storage only. The main reason is that it's going to be faster for you since you won't go through a server to reach and modify your files; using the Cloud is a bit like working on your files from an external harddisk. The speed is never as fast usually as the internal system. I am sure there are other "Best Practices". and I will work diligently to find them for you but that is an excellent place to start.
You are correct. If you are already doing that, I don't really have any ideas for speeding things up. I will "opt out" and open the question to other experts so we can get their input. Have a great day!