Lightroom 8.1: Super slow with large images from Nikon D850 on super fast iMac

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  • Problem
  • Updated 2 months ago
  • (Edited)
Hi guys

 

I have this iMac below

 

Screen Shot 2019-01-15 at 40004 PMpng

 

and the latest Lightroom and when I use the adjustment brush to select areas for the adjustment it goes super slow. 

What is going on with, is Adobe going to fix this issue, please?

I have the fastest iMac you can buy and with all the upgrades as you can see. 



Can someone help me please as this is slowing down my workflow massively?

 

Do I have to learn another editing software as this one won't work with large images?

 

Cheers
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Justin P Thomason

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  • frustrated

Posted 7 months ago

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Photo of Rikk Flohr

Rikk Flohr, Official Rep

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Try going to Preferences>Performance and unchecking the GPU option. Does your brush speed up?
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Justin P Thomason

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No it doesn't, is Abobe going to fix this problem please? its taking 10 times longer to edit a photo.
Photo of Justin P Thomason

Justin P Thomason

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No it doesn't, is Abobe going to fix this problem please? its taking 10 times longer to edit a photo.
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Victoria Bampton - Lightroom Queen, Champion

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There is some ongoing performance work underway, but in the meantime, let's see if we can help you get up to a workable speed. Tell us a little bit more about what you're seeing.

Is it slow with the first brush stroke, or is it getting slower the more you add? Does everything else run at a reasonable speed other than the brush? 

Which settings are included in the brush strokes? Some are more intensive than others.

Are you zoomed into the photo or at Fit view? Making the preview smaller by zooming out further or making the LR window smaller can help speed it up as there are fewer pixels to render.

Have you built smart previews for these photos, and if so, is Prefer Smart Previews for editing checked in Preferences > Performance? These are smaller proxy versions of the photos that can make a real difference to performance especially when working with large images.