Safari stopped working overnight
My iMac is running 10.15.7 (Catalina) and Safari is 15.3. When I went to bed a couple of nights ago it was working fine. I left maybe 8 or so windows up and running. When I got up the next morning, it was no longer working. If I tried to load a new page, it would only load partially. I was getting the spinning beach ball all the time. Some up and running web pages would at least limp along. And it could not deal with clicking on links.
I switched to Firefox that I had installed and it works fine. So I know it's not the networking or mouse. I was able to clear the history from Safari (it stayed up long enough for me to do that), but it didn't help. When I have to force quit it, it says it is non-responsive.
Is there anything I can do restore Safari back to life? I was able to export my bookmarks so I have those. I do have Time Machine available but I have never needed to use it. Since Firefox (and Chrome for that matter) are functional, it has to be something specific to Safari. Thanks.
iMac Line (2012 and Later)