Here are a number of tips for identifying and fixing the most common Chrome issues: what to do if Chrome is running slow, how to kill a frozen tab or window, disable sluggish add-ons, and much more.
If you decide macOS High Sierra just isn't working for you, you can revert to a previous macOS version - this tutorial will show you how to downgrade from High Sierra back to macOS Sierra, El Capitan, Yosemite and earlier versions.