I am using Google Drive Backup and Sync for Windows 10. Google Docs open VERY slowly from File Explorer. With the Chrome browser already open, it takes about 30 seconds after opening the file from File Explorer for the new tab to appear and open the Google Doc. Is there a way to improve this?
Basic troubleshooting on browser:
Clear your cache and cookies.
Try an incognito or private window.
Disable browser plugins or extensions. (Chrome, Firefox, Internet Explorer, and Safari instructions.)
Reset your Chrome settings.
Run Chrome Cleanup Tool, to remove software that may cause Chrome to experience issues
Next, click on Google Drive in the system tray > Preferences > Advanced.
By default, the Proxy setting is set at "Automatically detect proxy settings." Instead, tick "Direct connection."
Google Docs Help Forum