My fix is YouTube for the issue of slow videos being saved to Google Drive.
Here is the video on how to do that as well as a 30 day free trial of Screencastify - feel free to send on to your staff.
1. Verify your YouTube channel / verify and that will give you the ability to upload videos longer than 10-15 minutes
2. Then upload your videos to YouTube and make them unlisted then and copy the URL and send it on to Google Classroom - makes the videos up load immediately and the teacher can even see how many views they get.
eric.s.griffith @ gmail . com