Firefox stop loading the page so I have t constantly reload. Also the browser crash.
If you have submitted crash reports then please post the IDs of one or more recent crash reports that have a "bp-" prefix:
You can find the Report ID of recent crash reports on the "Help > Troubleshooting Information" page (about:support).
- Click the "All Crash Reports" button on this page to open the about:crashes page and see all crash reports.
If necessary then you can open about: pages via the location/address bar.
Try to disable IPv6 (check for other possible causes as well).