Greasy Fork is available in English.
Automatically select your desired video quality and select premium when posibble. (Support YouTube Desktop, Music & Mobile)
Can you tell me what version is currently installed and what userscript extension you use?
You can try again now in version 1.9.3 and let me know if it fixes the issue.
Version 1.9.3 works great (Tampermonkey, developer mode enabled). Thank you for your script.
After v1.8.2 not displayed in player settings. Chrome, Windows 10.