I've previously written about how bad graphics performance is in Yosemite when the zoom feature is used. That article can be found here. This update fixes all that.
Here are some numbers for the tests...
I used NovaBench again, same as last time. The numbers really speak for themselves. The best improvement is with zoomed in performance, gaining a 4700% boost! If you use this feature frequently, like I do, this update is a must.
Here are the raw numbers for these graphs.
|Both screens, test on retina||184||408|
|Both screens, test on external display||448||456|
|External display only||457||466|
|Retina display only||378||380|
|While zoomed in||8||384|