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pixel artifacts when merging layers or exporting file to jpeg


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I recently bought a new notebook, since the integrated graphics card of my old one was quite weak for Affinity Photo.
(New Notebook: Lenovo IdeaPad 5 Pro 16ARH7, RTX 3050 Ti, AMD Ryzen 7 6800HS Creator Edition)
After applying a few adjustment-layers followed by either merging visible layers or directly exporting the file as JPG, there will be a bunch of artifacts introduced.

DSC02209_rt.thumb.jpg.afa932b686870c7928c430c4428343b8.jpg

"Hardware-accelerated GPU scheduling" is turned off on Windows, as mentioned in this article.

image.png.2af425e4eea714716fbeb1e50f7faa18.png

Same issue occurs on Windows 10 and 11, tested it on two different SSDs.
The problem occurs not only on this very image, but when applying several adjustment-layers in general.
So far, I couldn't narrow it down to one specific adjustment-layer.
I never had such issues on the old device.
Windows is up-to-date, notebook-drivers are up-to-date and graphics-drivers for the dedicated Nvidia as well as integrated Radeon card are updated as well.
I also made sure that Affinity Photo only runs on the dedicated card for better performance.

1.png.4c6d6db5e4fa86e8c560df46f5c7b0bc.png

Affinity Photo Version: 1.10.5.1342 (Downloaded via Windows Store).

If I missed any details, feel free to ask.
Any tips and hints are highly appreciated! Thank you!

DSC02209.afphoto

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Welcome to the Serif Affinity forums.

As an experiment, you might try opening Preferences on Affinity Photo, and at the bottom of the Performance section turn off Hardware Acceleration (OpenCL). Then, after you restart Photo, see if you still have the problem.

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
    Laptop 2: Windows 11 Pro 24H2,  16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU
iPad:  iPad Pro M1, 12.9": iPadOS 18.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sequoia 15.0.1

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17 hours ago, walt.farrell said:

Welcome to the Serif Affinity forums.

As an experiment, you might try opening Preferences on Affinity Photo, and at the bottom of the Performance section turn off Hardware Acceleration (OpenCL). Then, after you restart Photo, see if you still have the problem.

Yes indeed, I confused Windows HW-Acceleration with Affinitys own HW-Acceleration settings.

Disabling as follows removes the pixel artifacts. Problem solved!

Edit > Preferences > Performance > Hardware Acceleration: [_] Enable OpenCL compute acceleration.

image.png.1471fba7c23af86301ed6ab24f6491b7.png

Thank you very much!

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