Severe performance degradation vs Mavericks

I have the June 2012 15" Retina MacBook Pro with 16GB of RAM and I can confirm that the performance is also choppy. I particularly notice it when scrolling through lists of Apps and documents that are embedded in folders on the dock. The genie effect is also a bit choppy. What a shame.

I have an app that lets me activate the discrete graphics card and use it exclusively. When the Nvidia 650M is pushing the graphics, most things remain smooth. So, it seems clear that the Intel HD4000 is struggling with Yosemite's UI elements on older retina devices.

I feel you. I got a mid 2014 and my animations are lagging. Not all of them, mostly the scrolls and the preview-like-opening on pictures (the bigger the picture the bigger the lag). But, if you use RDM, and set a Non-HiDPI resolution you'll se the lag is gone. I guess that Yosemite isn't ready for retina.. Which is sad and disturbing at the same time.

I really hope that with 8.1 for iOS comes an 10.10.01 or something to fix the bugs. Otherwise i will throw this Mac on the window..

LE: Still, i don't see why on Mavericks my 13" mid 2014 had no problems with the preview-effect or the genie effect but now it lags like ****. Basically nothing has changed, is the same thing, just differs some colors..

It could be that the OS is slower at first then you expected, directly after installing. OS X has some indexing to do and that takes a while (depending on how much data must be indexed) and it can lead to choppy behavior of the OS. Restart OS X after a few hours and the performance is generally much better. A benchmark app shows that after this indexing process is completed Yosemite is not slower (not faster either) than Mavericks.

Mine already completed indexing last night. This so far has beena major dissapointment on both my macbook pro and imac.

You installed on top of Mavericks? There are three things you could do that might help. Clean old caches. Repair disk permissions and restart your mac in safe-mode (it will repair all startup routines - will take a long while) and restart normally after that.

Will try that. But, the problem is related to the HiDPI resolution and somehow to the transparency. Beside, the console is crying..

I can't believe Apple have made this software available to the masses when it's clearly not ready. Since "upgrading" my Mac mini has been pretty useless. Programs take a substantially increased time to open compared to Mavericks, and then performance is poor at best. Opening files in Photoshop, for example, is painfully slow and I get the colour wheel almost all of the time - something which definitely didn't happen with Mavericks.

Aside from this, I've experienced a number of frustrating bugs today. When I open a new program on my left screen the right screen is changed to a fresh desktop. Why? When I turn my Mac on I get the login screen on the left monitor (as it always used to) but then the primary desktop is set to the right and I've been unable to keep the correct setting so far (it forgets that I've changed it following a reboot). The background of the top bar keeps disappearing so all of the icons, time, etc. just sit on top of the desktop background.

I hope Apple can release a fix, and quickly.

Just tried all of that. Doesn't do anything to help with the performance (though it was about time for me to repair permissions nevertheless!).

It takes a couple of hours to settle in (indexing). Give it some time - zap the pram, rebuild preferences, and restart. And did all of you do ALL of the App store updates? Mine is working fabulously on an 4 year old Quad core iMac i7 with 14 gigs of RAM. Looks fabulous, everything works great. No slow bootup.

Lots of ******* and whinin going on. Mostly, probably not the OS' fault.

Cheers,

Cameron

See I've been running it on a 2012 Mac Mini since the PB's and I am not seeing any slowdown in comparison to Mavericks. Bear in mind its going to take time to settle. On mine at least, it is definitely snappier than Mavericks

There are post on 15 rMBP high end things being slow/having laggy animations. Really.. ? What app store updates? Beside iTunes and some iWork stuff there's nothing to update. Nothing related to the OS anyway.. Still, the problem here is related to the Retina resolution, as i stated above, if you disable it, everything goes smoother. How come, in Mav we didn't experienced this ?