Here's a screenshot of the issue.
On the right, Windows Task Manager showing high Chrome CPU usage.
On the left, Chrome's Task Manager showing it's all coming from the Gmail tab.
If Hardware Acceleration is turned OFF in Chrome settings, Gmail uses 1-3% CPU when idle.
To isolate that it isn't a combination of Hardware Acceleration and something else I've tried:
- Disabled all plugins.
- Clearing cookies
- Incognito Tab
The Gmail tab will use 45-50% cpu as long as it's the foreground tab and Hardware Acceleration is enabled in Chrome.
Why is this happening? It doesn't make sense that an idol page should consume more than a very small amount of CPU time.
P.S. - I'm running Windows and this gmail cpu spike doesn't happen in Firefox or Internet Explorer.