Recently updated the latest version, and after completing the image upscale, I notice all images got this weird square pattern.
Original
Upscaled
This particular original is covered in micro patterns on the background wall. A denoise step before enlargement with Denoise AI, or Photo AI cleans it up quite nicely. Gigapixel alone seems unable to deal with it.
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THIS!!! 
It should not i was in the middle of my batch upscale before the update images works fine. After the update all images turn like this. And ive been doing this for long time, this is the first time I encounter it. But is there anyway I could revert the version?
I hope someone can help me solve this, I have hundreds of images that rendered like this, and I got frustrated because it took so much time for me to upscale them and I do not have much time to do it again. I was telling from the beginning its probably from the update. I wish I could revert it back.
Whatever version you want to revert back to, just go check in the release section and go to the version you want to use, you will find a download link in each of the topics opening posts there:
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The micro-patterns on the two images you posted appear to be identical, so I was assuming the one labeled original is what you were starting with. If that was not actually the original image then perhaps GPI did add something weird. Can we see one of the real originals you’re having trouble with?
When I compare the two posted, the “enlarged” version has more jpg compression blocks. This could have occured in a number of steps. Without more info I can’t go on.
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I observed the same behavior yesterday with a .CR2 file imported into Gigapixel V 8.0.3 from Lightroom Classic (V 13.5.1). The original CR2 file did not have that faint white grid pattern on it. The 2X upscaled version had that faint grid pattern (visible in Gigapixel), as did the version exported back to Lightroom. This occurred using the following GP parameters: Upscale = 2X; High Fidelity model; sharpening = 15, de-noise = 15, Gamma correction ON. Subsequently did a second upscale in GP using the Standard model from the same original .CR2 file and without Gamma correction (sorry, two variables) and the resulting file did NOT have the unwanted grid pattern in it.
Paul L - Michigan
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The original is the first image, then the upscaled version is the one you will see square pattern.
UPDATE
I revert the version back to v8.0.2 and everything works fine now. Yes the issue occur in the latest version.
I ran the same upscale as your second example in Photo AI 3.3.3 and no square grid pattern appeared, so yes there is something amiss with GP 8.0.3. This pattern has been a major problem in the past so it’s sad to see it crop back up again.
p.s. Gamma correction was off in GPAI, and the grid pattern still appeared.
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Same using this High Fidelity setting
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I’m having the same issue since v8.0.3. specifically when using the High Fidelity v2 option. Seems to be noticable on every image. Hoping for an update soon. Thanks
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Please let us know if the bug already fixed, there are currently 2 new updates already but I will ignore it for now until new update for this bug is release.
I just updated to 8.1 and the issue of the grid persists for me when using high fidelity v2. I also updated to the latest nvidia drivers, but made no difference.
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