Firefox tab hangs when opening maps.google.com and certain other sites

Lately (possibly since updating MacOS to Mojave, not sure), certain websites such as maps.google.com reliably cause a tab to hang indefinitely (with the grey rotating circle). This then causes other tabs to hang or not load properly until I restart Firefox, and I'm unable to quit Firefox normally, I have to force quit. I have no issues in Safe Mode, but I've tried refreshing Firefox, removing all add-ons and themes, disabling hardware acceleration, and the problem still occurs when not in safe mode. I'd really appreciate any help I can get with this, it's not only frustrating but is impairing my ability to do my job.