P: Performance problems iMac Retina 5k

Hi Adam,

when I open an image in PS i do this via lightroom. Right-click ----> edit in ----> edit with Adobe Photoshop CC or open in Photoshop as a Smartobject.
The settings for external processing in Lightroom are: PSD, 16-bit, Profoto RGB, 240 DPI. Lightroom is running at the same time as PS. But when i close LR, then is nothing better. I made a quick screen shot to show you the problem better. How do you see, delayed in zoomed mode. When i zoomed out it works 1 to 1.

Here is a screen capture with a photo when i use Lightroom: https://www.dropbox.com/s/6r79r2wmzx4...

Here is a screen capture when i draw up a color layer: https://www.dropbox.com/s/yopkyukag1m...

My iMac specs are:

OS X Yosemite 10.10.1
4GhHz Intel Core i7
24GB RAM
AMD Radeon R9 M290X 2048MB

I hope it helps you.

Thanks
Manuel

Hi Adam,

when I open an image in PS i do this via lightroom. Right-click ----> edit in ----> edit with Adobe Photoshop CC or open in Photoshop as a Smartobject.
The settings for external processing in Lightroom are: PSD, 16-bit, Profoto RGB, 240 DPI. I made a quick screen shot to show you the problem better. How do you see, delayed in zoomed mode. When i zoomed out it works 1 to 1.

Dropbox Link: https://www.dropbox.com/s/yopkyukag1m...

I hope it helps you.

Thanks
Manuel

Hi Manuel,

Can you tell me more about the types of images you are using? Do they have many layers, or layer comps? What's the bit depth (8, 16, or 32bit)? Do you happen to have any other applications running at the same time as PS? I ask because I've created big files on my 5K iMac and am not seeing the performance issues you describe. I'm still convinced we can find you a solution to mitigate the performance issues you're experiencing.

Thanks,
Adam

Hi Adam, Thanks for the quick reply.
I'm using the latest version of Photoshop CC 2014 2.2.
This solution which you describe here, has been already said to me the Adobe Support. I already tried it with multiple options and settings. Unfortunately, this solution did not yield any improvement. The main problem is that the changes (for example the selective color correction) didn't work 1 to 1 as usually, but with delay.

I've noticed that these delays will occur only if the images or graphics have a size about 3.700 * 5.000px. If the resolution is smaller (for example 1.500*2.500px), the delay is not so strong.
Also when i'm zoomed in the picture, works delayed. If i zoom out far, then works normal.

I think that the problem is the resolution of 5k. I have read in forums, that other iMac Retina 5k users, report about similar problems with Photoshop and Lightroom.

Thanks,
Manuel (sorry for my bad english 😉

Hi Manuel,

Let's start with a simple question:  what version of Photoshop are you using?

Have you tried changing the display preferences in Performance preferences to try Basic or Normal instead of Advanced?  I'll try to reproduce this myself first thing tomorrow morning when I have access to the 5K iMac again.  With any luck we can figure out a way to get performance back to what you'd expect asap.

Thanks,
Adam