Noticed the heavy CPU usage as well. The laptop still performed admirably but estimated remaining battery time fell below 2H on a full charge so I smelled something amiss. Turned out the videos on this page continue playing even when the tab is open in the background (not active tab, nor active window). Seems like a complete waste of cycles. (Opera Beta)
Sorry - wasn't sure of a good solution for this without rewriting our blog too.
Some things I tried:
- not autoplaying the videos (but they're super short, so it would be annoying to click play)
- playing them when they're in focus & pausing afterwards (would have to mess with our WordPress installation instead of launching this thing)
- using GIFs (they were HUGE - I couldn't get them below like 2mb each)
- YouTube embeds etc (ugh)
I thought this was the best compromise but yeah. Sorry :(