Firefox has been severely lagging--specifically when switching between windows. For example, I could have one window running nice and fast, but then when I switch to another Firefox window, it is unresponsive for up to 10 seconds. That means no opening tabs, no scrolling, no loading pages, until it becomes responsive again. And this happens just about every time I switch from one Firefox window to another. It's a big problem because multiple windows are an inherent part of my workflow, so I can't wait 10 seconds every time I have to do something in another window. Here's a very important piece of information: '''The problem does not happen in Safe Mode'''. However, Safe Mode is the only way to fix it. I've tried disabling hardware acceleration, disabling all extensions, refreshing FF (creating a new profile), reinstalling it, and the problem always comes back whenever I'm not in safe mode. I've spent a lot of time on my own trying to solve this, with no luck. Of course, I'd be happy to post any troubleshooting information you may need to help me. Thank you!