Participating Frequently

P: CR 18.3 is slow until you install the update (see Highlighted Post)

Forum|Forum|2 months ago
April 17, 2026
74 replies
3273 views

I have never had an issue with ACR before.18.3 freezing saying not responding saving files took twenty minutes instead of seconds everything was super laging, when I disabled the GPU acceleration it improved I see on the other pages I am not alone I'm using the most up to date windows, Nvidia drivers ETC: I have a 7950x, 5090, 64GB and NVME drives. Please fix as soon as possible or at least give a link to the previous version which I had no issues with.

Solution:

Update following the instructions in this link:

Rikk Flohr_Photography

Greetings all,

A new update for the Adobe Photography products has been released. The June release contains an update regarding this issue.

If you do not see the update in your Creative Cloud Application, you can refresh it by pressing [Ctrl/Cmd]+[Alt/Opt]+[ R ].

Note: It may take up to 24 hours for your update to be available in your Creative Cloud app.

Thank you for being so patient.

Rikk Flohr: Adobe Photography Org

D

digglescreative

Participating Frequently

Confirming that updating from 18.3.0.2528 to 18.3.0.2529 also resolved two issues I was experiencing:

1. Panorama merge DNGs failing to open in Photoshop when any Upright correction was applied (Auto or Guided). The error message referenced being unable to parse the file. Without Upright correction applied, the merged DNG opened without issue.

2. The Ctrl+loupe magnification in Guided Upright not functioning.

Both issues resolved after installing 2529. Shooting Hasselblad 3FR on Mac (Apple Silicon), Photoshop 27.6.0.

Jeff Arola

Community Expert

See if installing an updated version of Camera Raw 18.3 clears up the issue:

https://community.adobe.com/bug%2Dreports%2D562/p%2Dacr%2D18%2D3%2Dis%2Dunusable%2Dunless%2Dyou%2Ddisable%2Dgpu%2Dacceleration%2D1558055?postid=7542709#post7542709#post7542709

J E L

Community Expert

@AnnaAnPhoto, I copied your text from your previous post below so others here can better understand your issue.

==========================

I am experiencing another issue with Photoshop 2025 on macOS.

A DNG file generated through Lightroom Super Resolution cannot be opened in Photoshop.

Error message:
“The file-format module cannot parse the file.”

The same file still opens normally in Lightroom, so the DNG itself does not appear to be completely corrupted.

Workflow:
Canon R5 CR3 → Lightroom Super Resolution → DNG → Photoshop 2025 fails to open

This looks like a Camera Raw / file parsing issue between Lightroom and Photoshop.

Has anyone else experienced this?

nicola_8520

New Member

Yes I have exactly the same issue although from ACR into Photoshop on a PC. It was working fine, then took the latest updates last week and now the HDR Pano.dng created by ACR wont open in Photoshop and the error messageis exactly the same. Co-Pilot suggests that the issue is a known issue when using an intel arc processing card but the work around it suggest still won’t work. Hoping (if it is a known issue) for a patch. On version 27.6 of Photoshop

AnnaAnPhoto

Participant

W

wolfenmediaAuthor

Participating Frequently

did you get it sorted, will it open in another raw editor like affinity, I've only got a message like this if a file is corrupted

fung13

Participant

Camera RAW 18.3 version is extremely slow and unusable. Please fix the performance issue, i don’t want the new feature. As the version before performance is also not that good.

Rikk Flohr_Photography

Please install the update mentioned in the highlighted post as it solves the issue reported in this thread.

Rikk Flohr: Adobe Photography Org

eiapoce

Known Participant

Sorry for the quick reply.

It does happen only with camera raw. Other programs are working as usual.

There is no crash. Only a deep freeze lasting 5 seconds to 10 seconds.

CMass

Community Manager

Hey @eiapoce,

I’m moving your post from the Bug category to Camera Raw Questions while we gather more details about the crashing issue.

It sounds like this may be happening across multiple programs. Can you confirm if that’s the case? If you haven’t already, were you able to submit a crash report? Please let us know whether the report is for Camera Raw or Photoshop.

It would also help if you could share your system information. You can find this by going to Help > System Info. Please copy the details into a text file and attach it to your reply.

Here to help, just need more details.

^CMass

eiapoce

Known Participant

Hello, I started editing with photoshop after a 4 months pause and I found this unpleasant bug.

When using Camera Raw on a Windows 11 PC with AMD Ryzen 9950x CPU, RTX 4070ti Super GPU and x870 Chipset Camera Raw freezes the pc while rendering the raw files.

In order to troubleshoot the problem I freshly formatted the computer and started fresh with a updated windows 11 pro and stock bios settings (no overclock) latest nvidia studio drivers v596.36 and nvidia app v11.0.7.247. All programs are latest version. Bridge is v16.0.3.21 and ACR is v18.3.0.2528

How to replicate the issue
When editing RAW files coming from my Canon R6MKII ACR behaves sluggish. Modifiing sliders induces lags. I usually open 20 pictures at the time and the more the picture I edit the heavier the problem gets. After around 10 pictures are edited hard freeze happens - it’s impossibile to run task manager or to move the mouse - keystrokes are accumulated in the buffer. Usually thereafter the freeze resolves itself after waiting 5 to 10 seconds.

When I deselect the option to use the Graphic Processor in ACR preferences everything resumes as normal - that is without hardware acceleration the renders are MUCH faster and lagless.

This is happening on the newly formatted pc with no third party software or plugins.

I have to note that other programs and games have no issues at all. I did not try to run Lightoom.

peterb86513089

Inspiring

Did you try any of the suggestions discussed below in this thread? Many people have had success with these suggestions. In particular there is a newer (slightly newer) version of ACR to hold you over until the next release - it worked for me.

See below the yellow highlighted post from Rikk Flohr...