2-way sync is actually triggered every 2 minutes. So it will take anywhere from 0 -2 mins for any updates in your code and output folder to show up on Google Drive. Similarly anything uploaded on data folder, will get downloaded on machine within 2 mins. This workflow is detailed in help article in my above reply. Sync is generally an expensive operation (especially when dealing with folders containing large number of files) and hence we chose not to sync too often.
Let me know the issue this delay of upto 2 minutes is causing for you. We are open to align to what community needs.
I’m afraid , second issue is also by design, Sync back from machine to Google Drive only modifies and adds new files (not deletes). This is to make sure any accidental delete on your machine, doesn’t delete the data on cloud. Again, I am open to your feedback and suggestions on this.