It's nice to see you in the Community. I'll be happy to answer your questions and provide the support you need.
Based on what you've described, you may need to clear cache and cookies on your browser. Cache and temporary internet files are stored to accelerate loading times, however, too much can accumulate and impact your browser performance. The following article contains additional insight and steps for supported browsers: How Do I Clear My Browser Cache and Temporary Internet Files?
I recommend giving this a try and letting me know what happens. Feel free to shoot me a message if you need anything.