# Vray 3.5 RT on GPU very blurry

**URL:** <https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270>\
**Category:** Issues\
**Created:** [February 14, 2017, 10:22am UTC](https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270 "2017-02-14T10:22:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![perry2016](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/perry2016/32/11529_2.png) [@perry2016](https://forums.chaos.com/u/perry2016)\
**Post date:** [February 14, 2017, 10:22am UTC](https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270/1 "2017-02-14T10:22:37Z")

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Hi guys,  
what is wrong with vray RT on GPU, it only produces blurry images, with the CPU no problem .  
I tried one scene, left half with GPU (2 x Nvidia 980TI update drivers) and the right half with CPU : left blurry and right sharp, how come

And yes i tcheckes the DOF & motion blur in the camera  
Thanks!

 ![Vray 357 RT Blurry.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/7/7b53d884d31452b5d7dd79b41bec5af9d5c02608.jpeg)

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**Author:** ![Alex\_M](https://avatars.discourse-cdn.com/v4/letter/a/77aa72/32.png) [@Alex\_M](https://forums.chaos.com/u/Alex_M)\
**Post date:** [February 14, 2017, 12:50pm UTC](https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270/2 "2017-02-14T12:50:15Z")

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There’s an option to downscale textures when using GPU just under the “Render Servers” button. It’s the dropdown named “GPU textures”. Check if you haven’t chosen “resize all textures” and that you haven’t put a low resolution in “GPU texture size”. If you have, increase the resolution and try again. Or maybe even try selecting “full size textures” from the “GPU textures” dropdown.

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**Author:** ![matanov](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/matanov/32/21656_2.png) [@matanov](https://forums.chaos.com/u/matanov)\
**Post date:** [February 14, 2017, 12:50pm UTC](https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270/3 "2017-02-14T12:50:37Z")

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Hi,

Can you get me a simplified version of that scene? [peter.matanov@chaosgroup.com](mailto:peter.matanov@chaosgroup.com)

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**Author:** ![perry2016](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/perry2016/32/11529_2.png) [@perry2016](https://forums.chaos.com/u/perry2016)\
**Post date:** [February 14, 2017, 1:32pm UTC](https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270/4 "2017-02-14T13:32:02Z")

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just mailed you the scene

@Alex_m: just checked it, it was not the issue, but thanks!

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**Author:** ![matanov](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/matanov/32/21656_2.png) [@matanov](https://forums.chaos.com/u/matanov)\
**Post date:** [February 14, 2017, 2:18pm UTC](https://forums.chaos.com/t/vray-3-5-rt-on-gpu-very-blurry/62270/5 "2017-02-14T14:18:34Z")

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Writing here so everyone can see it.

You are using Catmull-Rom filter which is not supported in RT GPU. I will make a note for displaying a warning for unsupported filters when using RT GPU.