Yesterday (5/19), I noticed that Firefox wouldn't load certain websites - specifically, Facebook and my credit union after I tried to login, as well as some commercial websites I use for work, such as Claude.ai. YouTube videos did not play well either - they started buffering after a minute or two. I also noticed that when I was logged into my Google Workspace, apps like Drive and the Calendar had to be refreshed multiple times to get them to fully load - and even then, sometimes that didn't work. Yet other sites would load and function just fine. After working with Microsoft support yesterday to determine if it was a Windows problem (it doesn't appear to be), I started checking to see if it was a browser issue, especially since I can access everything I need to just fine on Microsoft Edge. I have tried clearing my cache, refreshing Firefox, reinstalling Firefox, and completing a full virus scan on my PC (no issues detected), but nothing has worked and the same problems continue. Any ideas? (Please note that I have limited tech troubleshooting skills. I am an ordinary user, not a developer.) Many thanks.