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1. Disable unnecessary extensions
I only use Lastpass extension for passwords
and
Magic Actions extension for youtube html5 and buffer speedup options
2. Disable unnecessary plugins
3. Enable SPDY/4
Type:
chrome://flags/#enable-spdy4
in address bar and click Enter. Now click Enable.
4. Increase Maximize tiles for the interest area (defaults to 512)
Type:
chrome://flags/#max-tiles-for-interest-area
in address bar and click Enter. Now change value defaults to 512. Now click Relaunch now in bottom left corner of the window.
5. Enable data compression proxy extension.
6. Enable Data Saver (beta) extension.
https://chrome.google.com/webstore/detail/data-saver-beta/pfmgfdlgomnbgkofeojodiodmgpgmkac
Sometimes the data compression proxy extension and the Data Saver (beta) extension only work if you are already connected to internet. For example my ISP needs to login to use internet and I can enable these two extensions when I login to ISP-Internet Service Provider or else I can't connect to internet and hosts file has no use with these two extensions.