Safari not loading pages, other web-based apps working
I'm having trouble opening anythign in Safari. The page appears to load and then just gets stuck. Was also having issues with iCloud mail a few hours ago but that seems to be fine now. Also, Slack was struggling to load.
I'm able to open web pages and browse using Firefox, no problem. Opened Safari preferences and Auto Detect Proxy is already UNTICKED so that is not the problem.
Any ideas? Using 2020 MacBook Pro, Big Sur latest update.
MacBook Pro 13″, macOS 11.5