I recommend cleaning the Chrome's cache. Open Chrome, then press CTRL + Shift + Delete. After this, go to Settings and click the Extensions on the left. Disable all unnecessary extensions. This will greatly improve the performance.
Secondly, run a copy of AdwCleaner, because it's possible that you might be infected with malware as well.
Download AdwCleaner: https://toolslib.net/downloads/viewdownload/1-adwcleaner/