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White streaks across photos


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Hi.

First, this is the wrong forum but it is the only forum the site would let me select so here I am. That's one issue I'm having. But the real issue is an editing issue where white streaks  appear randomly on some photos. Hoping someone can give me a hand with sorting this - here's the information about the issue.

It's random, not all photos.

It happens with three cameras I use, so it's not the camera.

The streaks are horizontal, mainly white sometimes grey, of varying width and length.

They appear after editing (which is always minimal) and, sometimes, if the photo is simply opened and exported to my desktop without editing.

My tech guy  has uninstalled Affinity, deleted the following folders and reinstalled the latest version, but the issue persists:

C:\Program Files\Affinity\

C:\ProgramData\Affinity\

%userprofile%\AppData\Roaming\Affinity\

I'd be grateful if anyone has an idea about what to do about this.

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4 hours ago, TKucey said:

Have something similar, but white or black bars and now cutouts.

Same advice: In Preferences, Performance, turn off Hardware Acceleration (OpenCL) if it is on.

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

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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21 hours ago, joe_l said:

I guess hardware acceleration is on in your AP. Turn it off within AP via Preferences > Performance.

Yahoo I think that has worked. I don't even know what hardware acceleration is, but the box was ticked and now it is not. The fault is intermittent but the photos I have edited with the box unticked are all ok. Thank you so much!

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