Comment 66 for bug 1615871

I experience bad performance with accelerated compositing mode on using WebkitGTK+ 2.22.5 on Fedora 29 with Intel Iris 540 (Skylake mobile) graphics. Turning it off makes pretty much everything faster, but particularly Facebook, which is nearly unusable with accelerated compositing on.

Also, when playing videos or scrolling through a site like Facebook, the laptop becomes hot and the fan goes full blast, which does not happen with accelerated compositing off.

Would this bug be the issue I'm experiencing, or should I file a new bug about this?