LrC v10 issue-Library shows heavy grain on photos after editing

Explorer ,
Oct 31, 2020 Oct 31, 2020

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A strange bug appeared today, I edited photos, using some a common preset, which contains a light grain. (I always use grain, love it) After a while, I discovered, that if I step to the next photo, LR shows a heavy grain first, and it shows the correct amount of grain later (or no grain, if it's not on the photo). It slows down the whole process, annoying. When I was ready, I stepped into Slideshow module, where I made a slideshow from the final images, but I was suprised, that there was a much heavier grain on all photos, than I finally edited. Weirdly, on bw photos more, stronger grain showed up, than on the color ones. 
I quit the slideshow, went into Library, and wow, the same thing! So if I am in Library, I see really heavy grain on bw graded photos, and also more grain on the color gradeded photos, than I edited, step into Develop, the heavy grain disappears (after a few sec), and correct amount to be displayed.

And this bug came only after I upgraded to v10.

I tried this on two computers, same v10 LrC, same photos, same settings of course. MacOS Mojave.
(2015 15" macbook and an i9 9900k-32gb ram-rx580 hackintosh, GPU accelerating ON/OFF, same, high quality previews)

Really annoying bug, hope some update will solve it soon, because I cannot go back to v9.4, since the catalog isn't compatible backwards.... damn...  

Any advice?

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New Here ,
Nov 03, 2020 Nov 03, 2020

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I have the same problem using Smart Previews. Without Smart Preview, the view is normal as before and the grain shows the layer I selected. Without Smart Preview,  Lightroom is very slow, much slower than it was before the update. My System should be fast enough! 

iMac (Retina 5K, 27", 2020) 

3,6 GHz 10-Core Intel Core i9 

72 GB 2133 MHz DDR4

AMD Radeon Pro 5700 XT 16 GB

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New Here ,
Nov 03, 2020 Nov 03, 2020

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Hi! I have the exact same problem. I reallly hope Adobe fix this bug. =(

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New Here ,
Nov 05, 2020 Nov 05, 2020

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I'm having the exact same issue and it's KILLING my editing time. Its painful! 

 

Catalina 10.15.7 

3,6 GHz 10-Core Intel Core i9 

27 inch - late 2013

 

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New Here ,
Nov 05, 2020 Nov 05, 2020

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HERES THE FIX!!! 

 

Please click on-Edit from the menu bar
select preferences >performance>Use Graphics processor> turn it off
and relaunch Lightroom classic 

 

No need to go back in and turn Graphics Processor back on  b/c it automatically uses the integrated graphics card of the computer

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Explorer ,
Nov 06, 2020 Nov 06, 2020

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Are you kidding me? 😄  The solution is to turn off the dgpu usage? 😄 The integrated gpu is zero effective. Weak. (in Mac-intel) The new v10 upgrade brought the gpu support for the Brush and for sg else, I forgot. So at last LrC having more help from the gpu, but now it has a lot issue with it... LrC uses the gpu fewer, than it should, but this is the way to gain more speed. The solution cannot be to turn it off.

 

Anyway, I tried it also, not working, having the same issue without the gpu. 

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New Here ,
Dec 13, 2020 Dec 13, 2020

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v10.1 and this terrible bug is still there. kidding? Again downgrade to v9.4.... OMG!!!!

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Explorer ,
Feb 24, 2021 Feb 24, 2021

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It is 2021 February now, and this grain issue is still existing on v10.1.1. I really don't understand, what's going on!

 

My hardware is perfect, everything works, turning off the dedicated GPU doesn't solve the problem. 

So again, if I set any grain on a photo, in Library modul it will show a much-much more heavy grain, not even close to the original Develop settings. Also scrolling with these photos is slowing down a lot because of loading the photos with the grain thing. 

 

I have to use v9.4, no issues with this version. Dear Adobe, could you tell us something? Could yiu fiy this please? 

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New Here ,
Feb 25, 2021 Feb 25, 2021

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Im still use v.9.4, too. This is absolutely unbelievable. For us, it is not possible to work with the grain bug. Adobe, I can not understand, why this heavy bug is still in the new releases??? 

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