Google Backup and Sync super slow and 100% CPU usage for days

I recently copied a lot of files into a synced folder to be back them up. The total file size was about 30GB, I have 10MB up/100MB down internet connection. So in a perfect world 8 hours should have been enough to sync. Google Backup and Sync kicked in and was at 100% CPU with the fan on hair dryer mode for nearly 2 weeks. Unfortunately there were 1000s of extremely small source code files which Google Backup can not handle efficiently. See https://support.google.com/drive/thread/5381381?hl=en Setup: 2018 MacBook Air Internet: 100MB download and 10MB upload Catalina 10.15.3 (19D76) Google Backup and Sync Version 3.48.8668.1939 What can be done to speed things up and avoid this?