Chrome: Version 70.0.3538.77 (Official Build) (64-bit)
Platform:Linux
Office Editing for Docs, Sheets & Slides version: 127.2195.2197


When user edits any docx file with 
What steps will reproduce the problem?
1. Open any docx file with the extension
2. Type '1' (or any key) 20-30 times. 

What is the expected output?
The typed characters should be saved properly.

What do you see instead?
"Edits will not be automatically saved." blood bar appears. And if you reload the page,
some characters are not saved. 

How often does it reproduce? Always.

* * * Please attach the file for faster debugging * * *
HAR shows lots of files.update Drive API requests on each key stroke, they go in parallel and 
some of them fail with 403 userRateLimitExceeded errors.

Is it expected the extension sends the request for each single character change?