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

So the fix is to buy a Thunderbolt Display and reinstall? Was it a clean install or restore from backup?

I just reinstalled over my existing OS X. If you don't have a Thunderbolt display, try from an external monitor.

OK. So you kept all the files and settings.

I have a TD at work, but fail to see how this can help. Before one of the updates for my mid-2012 rMBP, things actually ran smooth on that display.

I'm also guessing that by plugging in the TB Display I may have shut down the Intel Graphics 4000 HD GPU while installing OS X, leaving the discreet Nvidia GPU running during installation. I don't know for sure, but maybe by doing so, certain elements within Mountain Lion 10.8.2 software were finally able to perform essential updates to the Intel GPU itself.

Sounds like a Voodoo fix 😉 Let us know if it holds up after a few days.

Hey Wayne, a bit off topic but... what resolution did you run the Unreal Benchmark at? Also, what were your other settings? (Anistropy, anti aliasing, ful screen?, etc.) I want to compare it against my Mac Pro that I installed a GeForce GTX 570 2.5GB into.

Open GL

Res: 2560 x 1440 (Fullscreen - Mac LED Cinema Disp.)

Shaders: Medium

Anti Aliasing: Off

Score: 865

Average FPS: 34

Min:14

Max: 79

Thanks,

Kevin

I did not test with an actual Thunderbolt Display, but I have my old Apple Cinema Display 30" connected through a Thunderbolt Display. I followed your steps, and acknowledge that it does indeed seem to somewhat improve performance.

The speed is not super (yet) everywhere. However, performance in Safari 6.02 and even Chrome and Firefox seems to have improved somewhat (although the Webkit nightly version of Safari is definitely still a lot faster in scrolling) on websites such as TheVerge and ArsTechnica. Various window animations in OS X are also definitely faster. The Eclipse development environment (Juno version) also seems somewhat faster in showing text.

I have Photoshop CS5 (non-retina version), so I cannot check performance there.

Of course, all of this seems somewhat subjective.

The scrolling speed in displaying heavy PDFs in Preview has also improved.

When my external monitor is connected via HDMI to my rMBP, gfxCardStatus tells me: Dependance: External monitor. So I guess for your operation, a TB display is not required, a "classical" screen should be enough 🙂

As long as you use the Discreet GPU to install Mac OS X 10.8.2, and as long as all errors have been removed and permissions have been repaired, I think this may be a good solution. As of this typing, my rMBP (16 GB, 2.6Ghz i7) is still running very smooth with no screen blackout during startup.

guys, here were written many many times about lagging issue. You could use TB display or anything else, BUT if your screen is not "retina" then almost everything becoming ok. With descrete card situation coming better, but integrated graphic card totaly can't normally work with Retina display.

for test purpose, Turn on Integrated graphic card and repeat the same what I did here

http://www.youtube.com/watch?v=cHC-6bW0**4

do you have the same issue with your hardware ?

What exactly happened there? You dragged an app into a folder and it froze momentarily? As I said earlier, I think I created a new element by installing 10.8.2 with the discreet GPU (in my case, the Nvidia 650GT video card). By connecting the rMBP to an external monitor, thereby forcing the discreet GPU to run (even during the reinstallation of OS X) allows the Intel GPU to be turned off, allowing the Intel driver elements to take effect. It's kinda like repairing your hard drive with Disk Utility while running your operating system; you can't. Only when you isolate your OS by starting up from the Restore partition or Restore DVD can you effectively repair your hard drive. Make sense?

on the video happened the next: when I'm dragging app, top line of screen is blinking (take a look one more time).

when you turning on external display it's not retina display, you do the same if you will choose non-retina resolution on your notebook, for example with help SwitchResX.

I'm such a noob....the screen was set to "Best for Retina Display"........go back to HiD 1900 x 1200 and I'm back to square one....sorry folks 😟

THIS had better not be the permanent fix for the MacBook Pro Retinas 😟http://appleinsider.com/articles/13/01/07/intel-shows-off-4th-gen-core-processor s-bound-for-apples-macbook-lineup

Contacted Apple again today and served them a couple of new videos:

https://www.dropbox.com/s/iccxg0o7as1z48r/2013-01-10%2006.36.47.mov

https://www.dropbox.com/s/30nikkf4al5koob/2013-01-10%2006.40.05.mov