So I’m trying to render this glass full of liquid, it renders fine on CPU render but on GPU render I get wired fragments/splotches in the shadows. I already tried reloading the kernels and all that but, nothing has worked

Cpu Amd ryzen 7 2700x Gpu rx 5700 blender: 2.82a / 2.81 (tried both)

GPU render did work on a different computer which was some old 700 GPU render results


1 Answer 1


Two things;

1: It actually looks like the GPU is rendering more realistically. I think the reduction in quality would be /not/ having those artifacts (though this is debatable)

2: If you're rendering with Cycles, check to see if you have "Supported" or "Experimental" selected for the feature set. This setting will certainly cause rendering differences;

enter image description here

  • 1
    $\begingroup$ ok that does make sense, I did have a model error that made the problem much worse., but how does the explain when I used a Nivida GPU on a different computer, I got the same result as the CPU? or does it matter if that GPU was many times weaker than my main one? (rx5700). Regardless I think I may just want to try to remodel this and see if that fixes my issue. Also experimental did not change anything. Thanks $\endgroup$
    – jvb50m
    Apr 2, 2020 at 6:00

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