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Hello,
I changed my PC recenly (from i5-2500K, GTX 660, 16GB Ram, SSD) to i7-7700K, 16GB 3000, 2 x SSD, GTX 1060 OC 6GB and Lightroom (6.8) is still slooooow. In addition, the inclusion of supporting graphics card does not accelerate Develop module but clearly slows the whole thing down. I use only one LCD (27" 2560x1440). I have the impression that the previous versions of LR went faster on my old PC.
Kuba
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Are you doing a lot of brushing or a lot of spot healing on your photos?
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Not really. I'm talking about delays between switching photos, using simply adjustment (Exposure, color temp, cotrast etc.). Without GPU suport is smoother than with GPU suport. Sometimes, when i try to copy adjustment from one picture to another it takes few second when paste the settings.
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I believe that delays between switching photos is an expected outcome when you have a large monitor and you are using GPU acceleration. It's one of the tradeoffs that happens right now with the current state of GPU acceleration.
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Just a thought, have you built previews for your 27" monitor?
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Yes, of course (2560 pix). I've tried with 1:1 import, Smart previews etc. The biggest difference is in visuality of changing settings, Exposure for example. When I turn GPU Accelerate OFF, the adjustment is smooth, but when I turn it ON, I see something like frame-drops.
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Any ideas ?
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When I turn GPU Accelerate OFF, the adjustment is smooth, but when I turn it ON, I see something like frame-drops.
This is another expected result given the current state of GPU acceleration. If you read that link I gave, this is all explained.
The conclusion that I have (also expressed in that link) is that if you have a large screen monitor, some things will be slower and some things will be faster. What you are seeing is consistent with the explanation given by Eric Chan.
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Thank you but I read it before. I discovered something interesting. When I use RAW files from Canon 6d, GPU acceleration does not help, BUT when I use Canon 5d mkIII RAW files, the situation is exactly the opposite !!!
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PS. I'm using LR 6.4 version. In 6.8 version there is no difference between these two cameras (6d/5dmk3). Both type of RAW files are not supported in GPU Acceleration.
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The GPU option is really for systems that are using 4 or 5 K monitors. Your monitor, although 27", is not a HD 4 or 5 K type and the GPU option will only slow LR down (As has been proven).
So just set it to Off (Un-checked).
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I'm afraid you're wrong. GPU acceleration worked fine in previous version of LR - here's my video (LR 6.4).
Lightroom 6.4 GPU Acceleration on 27 inch (2K) LCD. - YouTube