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Affinity Batch Processing 1.10.5 image corruption artifacts

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Hi all,

I am running Affinity Photo 1.10.5 on an AMD 3800X with a nVidia 2060 SUPER (studio driver 512.96) graphics card.


When I do a batch processing to convert images with parallel processing and hardware acceleration enabled I see image corruption in the results. This in the form of artifacts (little rectangles). As soon as I turn off parallel processing this effect stops and the converted images are clean and as expected. 

If I turn off hardware acceleration the parallel processing also produces results without corruption. 

I wanted to attach two example photos but I seem not to be able to attach files to posts. 

Is this known and are you working on this?




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14 minutes ago, PeteMacca said:

Yes..., it's known. Hardware Acceleration (for some users) can causes artefacts to corrupt the image.

Are they working on it? I sure hope so!

This is an interesting one, though, as it seems like an interaction between parallel processing and hardware acceleration. 

-- Walt

Desktop:  Windows 11 Home, version 22H2 (22621.1413) 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 
Laptop:  Windows 10 Home, version 21H2 (19044.2728) 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
        Affinity Photo 1.10.6 (.1665) and 2.1.0 and 2.1.0. beta/ Affinity Designer 1.10.6 (.1665)  and 2.1.0  and 2.1.0 beta / Affinity Publisher 1.10.6 (.1665)  and 2.1.0  and 2.1.0beta
iPad Pro M1, 12.9", iPadOS 16.4.1 (a), Apple Pencil 2, Magic Keyboard

      Affinity Photo 1.10.7 and 2.1.0 and 2.1.0 beta/ Affinity Designer 1.10.7 and 2.1.0 and 2.1.0 beta/ Affinity Publisher 2.1.0 and 2.1.0 beta

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  • Staff

Hi @titan3025,

Welcome to the Affinity Forums :)

Many thanks for your report and I'm sorry to hear you're having trouble.

I can confirm this issue is already logged with our developers, specifically relating to Hardware Acceleration and Parallel Processing with in a new Batch job - we've previously made changes to the codebase to try and improve this and this is the first documented report of the issue since these changes were made - therefore I'll be informing our developers that this can still occur and provide them with the system details you helpfully have provided already.

I hope this helps!

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  • 2 weeks later...

I can also confirm.

In my situation it is simply when exporting to jpg after doing some editing. I have recently upgraded camera (Panasonic S5) and almost all my camera produced jpgs (at "fine" quality) are now producing these artifiacts after editing. Editing is usually only a little saturation plus brightness & contrast. Incredibly frustrating until I researched and found this forum topic. It would also happen on my old Panasonic G85 but only occasionally when doing complex editing.
I've just turned off hardware acceleration and problem seems to have gone away.
Up to now I have had to use Merge Visible multiple times across the various adjustment layers to produce two images, both with artifacts but in different places. Then I copy clean cutouts from one of these images to the other so as to get one clean image. Then export just that clean layer. Completely messy and frustrating so this "solution" is much appreciated, thanks. However it would be nice to have the problem fixed :)

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  • Staff

Hi @southerner,

Welcome to the Affinity Forums :)

Sorry to hear you're experiencing the same issue and many thanks for your report.

So that I can log this further with our developers, can you please confirm your system specs for me, specifically the CPU & GPU in use?

Many thanks in advance!

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Cheers @Dan C, my specs are:

Processor/RAM: Intel Core i7-6700 CPU @ 3.40GHz / 16Gb
Motherboard: Gigabyte GA-B150M-D3H
Graphics: Intel HD Graphics 530
Display: Philips 273PLPH 27"

Am suspecting that since I don't have a specific, high-spec graphics card installed, the hardware acceleration option is probably inappropriate for me anyway?

Hope this helps.



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