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Grid and Guides causing slowdown

New Here ,
Jul 25, 2020

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Any time I turn on grids and create multiple guides (4 or more), my performance drops considerably. It didn't used to be this bad as I could have upwards of 20+ guides on a relatively low file (20MB) with little slowdown, but now I can barely use the guides for work.

I've gone through and upped my performance settings (pictured) and added a scratch disk but it hardly makes a difference. 

I've also followed a number of steps from this guide: https://helpx.adobe.com/photoshop/kb/optimize-photoshop-cc-performance.html

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Grid and Guides causing slowdown

New Here ,
Jul 25, 2020

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Any time I turn on grids and create multiple guides (4 or more), my performance drops considerably. It didn't used to be this bad as I could have upwards of 20+ guides on a relatively low file (20MB) with little slowdown, but now I can barely use the guides for work.

I've gone through and upped my performance settings (pictured) and added a scratch disk but it hardly makes a difference. 

I've also followed a number of steps from this guide: https://helpx.adobe.com/photoshop/kb/optimize-photoshop-cc-performance.html

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Jul 25, 2020 2
Adobe Community Professional ,
Jul 25, 2020

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Which operating system?

How much free HD space do you have? 

And how much RAM are you allocating to Photoshop?

 

Nancy O'Shea, ACP
Alt-Web Design & Publishing

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Jul 25, 2020 0
New Here ,
Aug 02, 2020

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I am also running into this issue. I noticed I had a big slowdown after adding a guide layout. I tested this on a fresh 3840x2160 document to see how many guides it would take to show a noticeable slowdown and it was only 10. This was not an issue in the past.

 

Photoshop Performance settings:

 

PS_PerformanceSettings.png

 

Specs:

  • Windows 10
  • GeForce GTX 1080 Ti
  • Intel Core i7-8086k @ 4.00GHZ
  • 16.0GB RAM

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Aug 02, 2020 1
New Here ,
Aug 11, 2020

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Hi, just noticed the reply.

I'm using:

  • Windows 10
  • about 600GB out of 900GB
  • I'm allocating 85% from 16GB of RAM

 

I can get 3 guidelines out before severe slowdown

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Aug 11, 2020 0
Community Beginner ,
Aug 11, 2020

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I am also having this issue. It wasn't a problem a few months ago. 

 

EDIT: I've installed the earliest version I could (20.0.10) and that is working now as a workaround.

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Aug 11, 2020 1
Community Beginner ,
Aug 30, 2020

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Yes, this is definitely a new issue. Photoshop was rock solid until this issue popped up. I tried 21.2.2 where I noticed it, reverted to 21.2.1 and it's still there. This isn't a computer issue, it's a Photoshop issue and most likely tied to the guides since that's where the problem is most notieable.

 

Our computers are fine, I can edit 4k video and do effects......but photoshop guides kills my machine, lol.

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Aug 30, 2020 1
Enthusiast ,
Sep 20, 2020

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I have the same issue. When I turn on the grid, Photoshop becomes virtually unusable.

 

Yesterday I decided to update my Photoshop 21 to see if Adobe's amazing software engineers had solved its performance issues. I updated to version 21.2.3 (the current version)

Nope. Once again, I need to avoid the current version of Photoshop in order to get serious work done. So glad I'm paying monthly for this. I should stop being an idiot and cancel.

 

To address Nancy_OShea's questions:

"Which operating system?"

Windows 10. I keep it up to date.

 

"How much free HD space do you have? "

1.5TB via my Photoshop preferences scratch disk settings.

This including a physical 1TB stand-alone scratch disk HD which is specified as my primary scratch disk.

 

"And how much RAM are you allocating to Photoshop?"

My sytem has 64GB of DDR4. Even if I tell Photoshop it can use 100% of it, it makes no difference.

 

I also tried unchecking "Anti-alias Guides and Paths" in advanced performance settings.

None of this has anything to do with the issue.

___

 

Here's what I think happened - Photoshop team reworked how grids and guides are drawn, likely in an attempt to optimize them, but it appears their update just made things much much worse.

 

A quick visual analysis - 

The 3 following images are screenshots of a 1200x800 document in Photoshop 21.2.3 with the grid turned on.

Gridline every: 512px, Subdivisions: 16.

3KlmvEh^ Notice the randomness of the dotted lines. Why do they look like this?

 

If I zoom in, in Photoshop, to one of the grid squares it looks like this:CQslLxz The linestyle is ridiculously bad. Looks glitched.

NOW, if I screenshot one of the grid intersections and blow it up I see this:

YjGlAjE

What is this??? How many lines are being drawn on top of each other? What is this supposed to be???

I'd say something went wrong.

Is Photoshop duplicating lines, calling numerous line drawing functions unnecessarily?

(Remember that time a few years back when the Photoshop team broke the rectangular marquee tool and left it broken for a month?)

 

I closed Photoshop 21.2.3. I opened Photoshop 20.0.1 and did the same thing - 

The 3 following images are screenshots of a 1200x800 document in Photoshop 20.0.1 with the grid turned on.

Gridline every: 512px, Subdivisions: 16.

AtYfH1jLooks very different. Grids changed in Photoshop 21.

Now I'll zoom into one square again:

TmXAyCj

Looks as expected.

Let's look closely at a grid intersection:

8h8Raej

Perfect. Dotted lines. As expected.

___

 

Conclusion: Photoshop 21's grids (and guides?) are drawn with less effectively optimized methods than previous versions so the Photoshop team can maintain their incompetence quota. Go team!

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Sep 20, 2020 0