Youtube HD videos in html5 use 60-80 CPU resources

[SubzeroDiabolos]

I can play the videos fine, but they use so much resources it's crazy. 1080p videos should NOT be taking up to 80% CPU usage. I have an intel i5 using firefox. Back when the videos were using flash, the CPU usage at 1080p was not noticable.

[Buffy]

Try it in Chrome and see if it happens. Sometimes Firefox is messy with youtube, especially depending on some plugins/addons you use.

[SubzeroDiabolos]

Chrome CPU load for the same video at 1080p = 14%

[Buffy]

Yah, you've got some sort of conflict when it is trying to load that video in Firefox. You probably have a plug in or add-on that is increasing the work, or maybe your firefox/adobe installation is a little screwy. I've seen that before. I love firefox because of the add-ons, but sometimes it has drawbacks as a freeware.

I've never actually found a solution to that particular problem. You could try unloading plugins and add-ons and see if you can find the culprit.