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High html5 CPU usage on Windows 8.1

  • When viewing (at least certain) html5 with the latest stable Opera on Windows 8.1, CPU usage is almost 100%. I checked the Opera's task manager and 'Widevine Content Decryption Module' seems to be main reason for that. It's my mom's ASUS K73BE laptop. With my desktop computer WCDM does have hight CPU, when watching those same videos. Is it just that AMD E2-1800 processor is not powerful enough to run those vids? Here's one example:!/jakso/33005099/penny-dreadful/626279/uusi-helvetti I'm not sure which resolution that vid is.

    Not sure if this video is accessible in other countries.

    Also, tried toggling HW video decoding and the browser's HW-accelerating on and off, but that din't help. Also reinstalling Opera did not help.