Ensure your language packs (fr) are up to date to avoid UI lag. Final Thoughts
Sometimes your graphics card and Firefox don't talk to each other correctly. 4485812-6360754-win10-firefox-BE-fr-low-1670193123
Firefox has built-in tools to help. You can manually adjust how it uses your computer's resources: Open the and select Settings . Go to the General panel. Ensure your language packs (fr) are up to