Blur looks wrong when using GPU to render instead of software

Participant ,
Jan 01, 2021 Jan 01, 2021

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davids58395606_0-1609519416371.png

You can see on the above what it looks like with the GPU rendering enabled

and below is what it looks like when it's software only

davids58395606_1-1609519453593.png

Any reason this doesn't work properly and is there a way around it other than turning off GPU rendering which is just a pain?

 

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Editing, Error or problem, Hardware or GPU, How to, Performance

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Participant ,
Jan 01, 2021 Jan 01, 2021

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Anyone have an idea? This is causing my video to take over an hour to export without the GPU and I can't figure out why it would be happening

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Participant ,
Jan 01, 2021 Jan 01, 2021

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Premiere Pro 14.7

Windows 10, AMD Ryzen 7 1700X, 16GB Ram, GTX1070

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Adobe Community Professional ,
Jan 01, 2021 Jan 01, 2021

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So with the GPU it's just not blurred quite as far ... ? Or ... what? Other than the scale of the two images is not the same here, it's very hard to see any difference.

 

Neil

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Participant ,
Jan 02, 2021 Jan 02, 2021

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Hey if you look at the blacks when the GPU is enabled, they look horrible it basically clips all the blacks as if you turned the blacks down and adds a lot more noise to it

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Participant ,
Jan 02, 2021 Jan 02, 2021

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Here's a second example 

davids58395606_0-1609583375424.png

The blacks are clearly wrong and shouldn't be acting like this when a blur is added, and it works fine when it's software only

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Adobe Community Professional ,
Jan 02, 2021 Jan 02, 2021

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Some Adobe filters will give a tad bit different result between GPU and software only mode. 

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Participant ,
Jan 02, 2021 Jan 02, 2021

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But it's not just a tad different the one with GPU is just plain wrong, it clips all the blacks and adds noise and looks horrendous, may be hard to see but if you look here - 

davids58395606_0-1609583349499.png

the blacks are clearly wrong and shouldn't appear like this

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Participant ,
Jan 05, 2021 Jan 05, 2021

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So I guess just chalk it up to another horrendous looking bug

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Enthusiast ,
Jan 05, 2021 Jan 05, 2021

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Have you tried using a different blur effect? You got the same result?

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Participant ,
Jan 21, 2021 Jan 21, 2021

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Yeah it's just the difference between GPU and software but exporting with software is a pain

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Participant ,
Jan 21, 2021 Jan 21, 2021

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Any knowledge on this yet? The blacks look absolutely horrendous with GPU and I don't have the privilege of waiting 6 years for a render with software only selected

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