Chrome unable to load Google sites

Recently I had been facing problem loading Google sites such as its search engine, Gmail, Youtube, etc.

It is either take extra ordinary long time to load, or just failed with `ERR_QUIC_PROTOCOL_ERROR`.

I did a search and found I am not alone, and below are the solution [1]:

1. Open a new tab in Chrome, and type `chrome://flags/` into address bar, then press Enter.
2. Search for `Experimental QUIC protocol`
3. Disable it.
4. Restart Chrome. Done.

It had been about a week, and the error never happen again.

[1]: https://productforums.google.com/forum/#!topic/chrome/xKFfhDvhjU8