UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36

Steps to reproduce the problem:
1. launch https://www.youtube.com/watch?v=dudfGFb47mc
2. reload page

What is the expected behavior?
page reload success and video played normal

What went wrong?
sometimes render process stuck, and there is no response any more.

Did this work before? N/A 

Chrome version: 47.0.2526.69  Channel: n/a
OS Version: Linux version 4.1.10
Flash Version: 

cpu always 98%~100%, memory increased.