Steffen Wenzel

I did some digging after you all said that this load is not normal. JSFiddle reduced the load by about 10% but it did not drop. Deactivating plugins/extension (Firebug etc.) did not help either. The culprit was the display settings. I'm running the MacBook in scaled (non retina) resolution and it even says on the panel that this can reduce performance. Using the default resolution keeps everything quiet, using scaled (and Firefox) makes the fans kick in after a minute. Knowing this, I'm more relaxed about the perfomance of my page now. Thanks!

This animation uses 50%+ of the cpu on my MacBook Pro (2,6 GHz Intel Core i5, Late 2013) in Firefox (43.0.3). I know I'm constantly doing something but I though opacity was a "cheap" property to animate especially when leveraging requestAnimationFrame. As I'm still new to GSAP I'd like to now if this is normal or if I'm doing something wrong