Recently I started using the WordPress SEO plugin of Yoast.com. During the usage on a page I encoutered a heavy CPU usage of my PC. After a certain time I even got a message that the skype toolbar wasn't performing and the plugin/addon of Chrome was being disabled.
1. Open your WordPress site with Google Chrome;
- Skype Toolbar active;
2. Open a single page and start editing the SEO title and description;
Performance is OK and the instant example is updated immediately.
When starting the edit the performance is going down and the instant update gives hickups. After a while Chrome complains about the skype toolbar. After giving approval to disable the skype addon the performance is as expected.