UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.36

Steps to reproduce the problem:
1. Install the Chrome Extensions chromeIPass (https://chrome.google.com/webstore/detail/chromeipass/ompiailgknfdndiefoaoiligalphfdae), JetBrains IDE Support (https://chrome.google.com/webstore/detail/jetbrains-ide-support/hmhgeddbohgjknpmjagkdomcpobmllji) and Ghostery (https://chrome.google.com/webstore/detail/ghostery-%E2%80%93-privacy-ad-blo/mlomiejdfkolichcflejclcbmpeaniij) on Chrome 66.
2. Auto update Chrome to version 67

What is the expected behavior?
low CPU usage as usual 

What went wrong?
The above mentioned enhancements lead to a high CPU utilization as you can see on the attached screenshot

Did this work before? Yes 66

Chrome version: 67.0.3396.62  Channel: stable
OS Version: OS X 10.12.6
Flash Version:
 

Deleted: screenshot.png 1.9 MB

	screenshot.png 1.9 MB View Download