Too many resource-intensive applications are running, leaving Firefox little space to process your requests.You have opened many tabs and windows while browsing, especially those heavy pages (full of video ads).Those plugins are very likely to cause Firefox to freeze. You are browsing sites that use heavy plugins such as flash, Java scripts, even Adobe Reader.Step 6: Switch to an alternative web browser.ĭepending on the macOS version your MacBook Pro is running, and the Firefox version you use, reasons may vary.
