Is it me or there seems to be alot of blackout spaces? Screenshot without cropping helps others to see what is happening on screenshots.

This could be a problem with the TLS 1.3 Early Data feature also known as Zero Round Trip Time Resumption (0rtt). You can try to set security.tls.enable_0rtt_data = false on the about:config page to disable this feature until this is fixed by Google or Mozilla to see if that helps.

See also:

• /questions/1376015 Issue with most Google sites on Firefox v100 64bit

This could be a problem with the TLS 1.3 Early Data feature also known as Zero Round Trip Time Resumption (0rtt). You can try to set security.tls.enable_0rtt_data = false on the about:config page to disable this feature until this is fixed by Google or Mozilla to see if that helps. See also:

• /questions/1376015 Issue with most Google sites on Firefox v100 64bit

Hello,

please is there any update to solving this problem? im using mozilla for many years but today i'm experiencing frequent loading times ONLY on google/youtube sites, and it begins to bother me, i've set the security.tls as you instructed me but that did nothing to solve my problem... if this persists i'll have to change my browser

What security software are you running? Do you have the same issue with Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

You can also try Windows Sandbox if you're running Win Pro to see if it's a browser issue or something in your environment. https://www.howtogeek.com/399290/how-to-use-windows-10s-new-sandbox-to-safely-test-apps/