> On Jan 5, 2015, at 9:00 AM, Paul Scott <psc...@skycoast.us> wrote:
> 
> And a waste of time that should have been spent elsewhere.

I usually dislike piling in on Apple's UI blunders, but in this case I'm 
compelled to agree :-p

I honestly thought that in the post-Steve-Jobs era we at least wouldn't get 
these pointless gee-wow visual effects anymore; he was always very susceptible 
to them. Apparently someone there saw GPU cycles going unused and decided they 
needed to find a new excuse to push some pixels around. 

Scrolling performance in source-list views (i.e. Xcode, Mail) is total sh*t in 
Yosemite, even on my relatively new MBP, and I blame "vibrancy" for it. With 
the insane GPUs we have nowadays, there's no excuse for a simple outline view 
not to glide up and down at 30fps or more.

I guess the best we can do as developers is to vote with our feet by not 
adopting it in our apps. (I haven't had to deal with an OS X source list in a 
while; I assume "vibrancy" has to be opted into? Or at least there's a way to 
opt out?)

—Jens
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