[francisl]

There is probably business strategy in that, but I remember flash on my mac to be terrible (100% cpu, draining battery like crazy). While the same version on windows was running perfectly.

[Marazan]

Apple wouldn't give access for some hardware apis to Adobeso stuff that was being done on the graphics hardware in windows had to be done 100% software on Mac. Then Jobs complained that Flash was slow.

[anotherangrydev]

And its pretty much the same thing now.

Try WebGL on any Mac (Safari is the worst performer of them all btw). You will see a bit of lag, frame drops, CPUs at 100%, a lot heat and your battery will die in two hours max.

Open the same site on a Chrome/Windows machine (with comparable specs of course) and you don't see any of that trouble.

Why? Because Apple wants everything done "The Apple Way®©™" and other people just don't care so they just create a substandard implementation and call it a day. And it's only going to get worse now that they want to push Metal everywhere.