Mountain Lion UI Lag on rMBP !!! (Let's Make this thread serious and hope for a fix)

I didn't see any reply so I ad one. I've got the same problem with my rMPB who is "lagging" with Mission Control...

Same thing here. Bought my macbook pro retina last week (512 ssd, 2.66ghz, 8 gb ram), it lagged under lion and i truely hoped that the ML update would fix these issues (browsing websites, resizing apps and mission control). it did not, worst: it was better under lion.

a lot of retina owners were lucky with the mountain lion update, and i apart from that thread i did not find a lot of complaints, "unfortunately" for us... but even if we are a minority, we need to be considered by apple.

please give us a fix or a solution !

If you use gfxcardstatus, you can force using the 650M and it does not lag anymore... So, there is a problem with the HD4000... :/

I hope Apple gonna give a solution...

Mine is laggy with the 650M, better than the Intel, but still laggy

Apple needs to take a page from Android's 'Project Butter'

Me too, thanks to gfxcardstatus i could switch to the 650M, but it stayed laggy. I did not notuice any difference between the two cards.

Looking at the process activity, Windowserver is what handles the drawing of whats on the screen, and it's what runs really high when switching views. Testing back and forth, there is practically zero difference between the intel and nvidia GPUs because the heavy load is happening on the CPU - and pretty much only when going to desktop, not to full screen apps

also, i notice that when giong into mission control, into an app, and then swiping to desktop its smoother than going back and forth between desktop and the app. It seems to "clog" up after doing that a few times, while going into mission control smooths things up a bit. weird.

Here is a discussion about this problem. Not really a solution but this shows we're not alone !

Me too, But I fixed the problem,

1: Go to system prefrences,

2: Click energy saver,

3: On top should show "Automatic graphic switching" Uncheck it and it should be buttery smooth.

Its a problem with the intel drivers i think.

to add to what I was saying before, kept fiddling with it...

the problem causing the lag is the Dock. I guess it's the high DPI icons + animations all being thrown at the cpu (and not the gpu) that's causing the slow down. Kept testing and I really see zero difference when I change the GPUs. Hiding the dock, however, makes swiping between desktops buttery smooth.

I disable automatic switching by default for power reasons alone - the thing turns it on for the weirdest times, like running Chrome and god knows what else that doesn't actually require increased graphics

but to reiterate, switching from the intel graphics doesnt make much of a difference in my experience

You can force the 650M GT with gfxCardStatus (it's like Disable automatic graphic switching but it also shows which card is used and which application needs it) but the battery is... well... not as good....

So you can make your GUI faster but there is a problem with the HD4000 (Mountain Lion optimisation ? Intel driver ***** ?). But that doesn't change the fact Apple MUST solve this problem...

i've got to add that when my computer gets off sleep mode, it takes 5 to 10 sec to get the trackpad working. annoying.

and unfortunetly, none of the above tips worked for me: always a pain in the *** to scroll down on theverge.com for example.

what browser?

firefox is terrible on the retina, chrome too but the beta is a lot better. safari runs great.

the verge is a heavy site,maybe not the best to test with since it'll make any browser on any computer lag at least a bit

i'm using safari... yesterday, i ran a side-by-side test with a 2011 macbook pro and my macbook pro retina. Both on moutain lion, both using safari: the 2011 macbook pro was way smoother than mine on several websites, including the verge.

A little tip :

The line used on a terminal

This changes the duration of the animation.

If you set 2, it's really long and it you set 0.01, it's only 2 FPS.

defaults write com.apple.dock expose-animation-duration -float 0.15

And after this commande, type this to restart the Dock :

killall Dock

It's not a solution, it's just a little tip who can make the LAG more... acceptable...