Today, when I clicked Firefox, it automatically updated to the latest version i.e. Firefox 73.0. Problem begins form here. Suddenly my CPU usage went high and Window Task Manager show CPU usage above 90% and two Firefox processes uses 27-29 CPUs. My 2GB RAM's usage reaches at highest. When I tried to close everything, nothing works. So I closed browser forcefully by ending process tree from Task Manager. Without opening a single link, it ate my all memory. Then How can I browse? Please Help!