Google Chrome has a built-in task manager that will help you troubleshoot what tabs and extensions are causing issues. From the task manager, you can kill or end those processes that may assist you in troubleshooting what may be the culprit. Very, very seldom have I had to use the task manager, but is good to know it is there when things start slowing down.
You can quickly get to the task manager in Google Chrome by hitting the “Shift+Esc” keys together on your keyboard. You can also get to the task manager by accessing Chrome’s menu by clicking on the three dots at the top right corner of the browser, then “more tools”, then “task manager”.