P: Slider Lag

[David Badke]

In Photoshop 2020.1, when dragging sliders (e.g. in Levels, but in other slider-containing dialogs as well) there is a significant lag before the screen redraws (Preview enabled). The screen doesn't start to redraw until I stop dragging the slider; there is about a 0.5 second or more delay before I can see the effect of the change. Photoshop 2019 does not do this, on the same computer; the slider change effect is shown continuously and smoothly in the preview as the slider moves. This is happening even with very small images (1000 x 600).

This makes fine adjustments very difficult to do, since I can't see the effect as it happens.

System information:

Adobe Photoshop Version: 21.1.0 20200212.r.106 2020/02/12: 4dd027efb58  x64
Operating System: Windows 10 64-bit
Version: 10 or greater 10.0.18362.329
System architecture: Intel CPU Family:6, Model:14, Stepping:13 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, AVX, AVX2
Physical processor count: 8
Processor speed: 3000 MHz
Built-in memory: 16318 MB
Free memory: 11196 MB
Memory available to Photoshop: 14929 MB
Memory used by Photoshop: 75 %

I have tried many suggested "performance enhancing" preference settings, but they don't help. Current settings:



I have two scratch disks set up, with the main one on an SSD.

My computer is certainly fast enough that there should be no lag, and there is no lag in PS 2019. Am I missing some setting or tweak that would eliminate the lag? Or is this a known problem in PS 2020.1?

David

[FeedbackCommunityMember]

yes, the same bug on my PS 2020 v21.1 !!!! so I reinstall the PS 2020 v21.0 !!!

[FeedbackCommunityMember]

I am having the same problem with Photoshop 21.1 installer on WIN10 HP ZBook (more system info below).

I will follow x adrian's action for now and roll back to pre 21.1 version.


My system information (from Adobe Photoshop "system info" dialog):

Adobe Photoshop Version: 21.1.0 20200212.r.106 2020/02/12: 4dd027efb58  x64
Number of Launches: 302
Operating System: Windows 10 64-bit
Version: 10 or greater 10.0.18362.329
System architecture: Intel CPU Family:6, Model:14, Stepping:10 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, AVX, AVX2
Physical processor count: 6
Processor speed: 2592 MHz
Built-in memory: 32615 MB
Free memory: 20907 MB
Memory available to Photoshop: 29867 MB
Memory used by Photoshop: 70 %

[FeedbackCommunityMember]

Same here ever since I upgraded to photoshop 21.1.0 the sliders got laggy .

[saftladen]

see here:https://feedback.photoshop.com/photoshop_family/topics/camera-raw-lagging-issue-after-update-dng-pic...

[David Badke]

Not the same issue!

[FeedbackCommunityMember]

I had lag in brush settings. Sliders and direction compass.

Win 7 x64

[David Badke]

This appears to be fixed in the recent Photoshop 21.1.1 release.

[dgrainger]

Update to 21.1.1 fixed a lot of issues.

[ariedesaint]

Same here..after the update sliders are slow...And go back again to PS 2019:(

[J453]

Are you saying sliders are slower in 21.1.1 than 21.1.0?

[Sergio Parrella]

It did? I'm holding on to 21.0 because curves in 21.1 were causing lag. Are they also fixed?

[ariedesaint]

both bad...don't know of there is a difference..the delay is really annoying.
But the difference with PS 2019 is huge.In 21.1.10 i had problems with shadow highlight en delay in curves etc..In 21,1,1  the shadow highlight works again...but the delay still there.

[ilquare82]

How did you solve it? What version do you have installed? Hi

[Drawsome]

This was solved? I am on 21.1.3 and the brush setting sliders lag make the settings panel near unusable.

[matt-tnm]

21.2.0 too. Have gone back to 21.0.3 - that at least let you drag the sliders/handles around smoothly. Albeit the canvas still takes a while to update to changes but at least you don't have the teeth-shatteringly frustrating experience of not being able to move the slider where you intend.

[matt-tnm]

21.2.2 seems to perform the same.

[matt-tnm]

21.2.3 also performs the same.

[ilquare82]

I did not understand ... it is worth updating to 21.2.3?!? Is it like 21.0.3?

[matt-tnm]

Sorry - I meant it's the same as 21.2.2. Everything after 21.0.3 has been horribly laggy once you get up to a decent number of layers.

[matt-tnm]

It feels a lot like they've tied the update of the slider's handle to the update of the canvas since then. Where you used to be able to make precise changes to the slider handles and then wait for a moment for the canvas to update, you now move the slider, it doesn't move with your movement until the canvas updates. By which point you've over or undershot because of the lack of visual feedback. And with complex images, that can take a moment even with the beefiest machine.

Now, arguably this wouldn't be a problem if PS leveraged the GPU more extensively (like the competition!) as even on complex documents, the vastly more parallel GPU architecture would be able to cope with live updating of the canvas, but PS is still mostly CPU driven, and largely single core at that for this sort of operation, so it'd be better to go back to the scenario where you could at least see where you were dragging your handle live...

[matt-tnm]

The new point release, 22.0.0 suffers the same slider handle-dragging lag as all the post 21.0.3 versions. Most noticeable on Curves but also pretty bad on Colour Balance. This is only when you get up to big canvas sizes and quite a few layers, please note.

 It also has some nasty render errors when transforming the new live shapes.

[masktao]

@mh_tnm 

yes. go back to ps 2019

[FeedbackCommunityMember]

Adobe Creative Cloud CC 2019 Direct Download Links

2019 fixed the problem !

[matt-tnm]

Yeah... they're going to depreciate those at some point though - it's a concern that the 2020 versions are all essentially unusable on 90% of my workflow (anything larger than 20mp and more than a few layers).

[matt-tnm]

Tested 22.2 - same handle lag problem.