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Limit video cache size should be checked. Try 3.0 to start. The comma vs period must be due to the language version you are using. Also I would recommend Unchecking Use Smart Previews instead of Originals when editing as that has reportedly slowed performance.
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Are you saying that in LR 8.2.0 you did not have this problem, but in v8.2.1 you now do have it?
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Correct
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Is your Use GPU on or off in your preferences?
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Same problem here but with Windows (1809). The lag is not as hughe as RamblinLamb describes and LR doesn't crash but it's slow (again). Also switching between files takes longer before the preview is sharp.
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Could you please answer the questions asked above?
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My software is updated automatically but I'm pretty shure that it started after I had the notification that LR was updated.
The use of GPU is off because it always worked better this way.
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Try turning on GPU processor. Also change the comma in the cache size so that it is 20.0 not 20,0. Restart Lightroom after making these changes.
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But having the GPU on is known to slow down brushing.
Anyway, if none of the suggestions help, you might have to revert to a previous version of Lightroom where it worked well (probably 8.2). Install previous version of your Creative Cloud app
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cmgap schreef
Also change the comma in the cache size so that it is 20.0 not 20,0.
LR changes the size itself to 20,0 if you type just 20!
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Limit video cache size should be checked. Try 3.0 to start. The comma vs period must be due to the language version you are using. Also I would recommend Unchecking Use Smart Previews instead of Originals when editing as that has reportedly slowed performance.
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My video cache was already set to 3.0. I did purge it.
This wasn't checked, so I checked it. "Use Smart Previews instead of Originals when editing" That has resolved my issues.
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Well I spoke too soon! The changes I made worked, for awhile, then it came back for no apparent reason. ARGH. I'm now at a loss here.
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Im in the same position with the D850 images, super super slow with adjustment brush!?? tried everything.
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Did you turn off Use GPU in preferences?
Sent from my iPhone
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https://forums.adobe.com/people/justin+pt83894960 wrote
Im in the same position with the D850 images, super super slow with adjustment brush!?? tried everything.
My answers in your thread from a few months ago are still valid.
Lightroom 8.1 super slow with Large images from Nikon D850 on super fast iMac
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Just move to capture one like all the pros do!
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Please upload a screen shot of your Preferences > Performance tab.
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So one issue is your 5K display (based on rig described).
Trying to remember all the tweaks to attempt to improve performance on MAC 4/5K displays
In Develop module, select 1:1 or smaller, 1:2, 1:3 (smaller view) to cut down on pixels in LR windows showing the image.
In Develop, make side, top, and bottom panels as large as possible, decreasing area available for the LR window showing the image.
In Develop, force use of Smart Previews (ahh, you are doing that)
Clear History panel?
use a smaller (resolution ) monitor
And for a Windows OS, just reduce the resolution
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Also, although this issue has decreased in validity, even though you have that Camera RAW CACHE limit set higher than default, consider increasing it as an experiment, try 40 maybe more
Oh, and consider purging it.
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Inquiry, does this lag start early on in editing, or later on after many many other edits? Now Adobe reccomend adjustment brushes, and spot removal, later on. But I am curious if in your case this is an incremental thing.
Edit another image, start out with the adjustment brush, nothing else. Lag?
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And along with my just previous off the wall inquiry. What if you create a brand new catalog. Import just one image. Edit it, starting with a brush. LAG?
Thoughta are, is something clobbering your catalog, perhaps in how complex or numerous your edits are, or is something very broken on your rig.
Or in your catalog?
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Hey Mate,
Did you ever have any luck with this problem. I have it all the time and it drives me crazy. And my rig is a top of the line imac pro with all the gear. I feel like I've tried everything to get it running smoothly but no luck.
Cheers,