You can try to disable hardware acceleration in Firefox. *Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available" You need to close and restart Firefox after toggling this setting. *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes *https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration ---- Try to set all plugins to "Ask to Activate" on the "Firefox/Tools > Add-ons > Plugins" page. *https://support.mozilla.org/kb/Troubleshooting+plugins

Thank you a lot, hope this works