Use Chrome's Task Manager to find out which site or extension slows it down

http://ift.tt/eA8V8J

To find out which site or extension uses the most CPU, you'd click on CPU to sort from highest to lowest CPU usage. ... using too much CPU or memory as you engage actively on these sites whereas most mining scripts don't prompt you before they start using your processor to mine crypto-currencies.

from Google Alert - CPU processor http://ift.tt/2FiKx8w
via IFTTT