VrayGPU 6 Update 1.2 - Normal map issue

V-Ray V-Ray GPU Issues
1

I have encountered a problem with a normal map looking different between GPU and CPU

Its been some time since I dug into GPU gotchas and cannot recall if this is a known issue or limitation I have forgotten about.

MAX24 VRayGPU 6 Update 1.2
ACES

CPU looks correct with no pattern showing

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GPU shows a pattern than seems to match up with the polygon structure of the model, here its quite faint but with more reflectivity it can really be apparent.

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​Material is straight forward, diffuse map, VrayNormalBump+Normal map using VrayUVWRandomizer with stochastic tiling turned on

Looks like smoothing for any condition seems to be a problem.

This is a diffuse with reflection, little gloss nothing else

CPU

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GPU

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2

Seems related to using MAX/ACES

The arm pad and frame look better. Maybe something weird happened.
Will keep experimenting with ACES and see. Will reset vray in between.

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3

Switching back to ACES the issues with the arm pad immediately return. Will double check I have the maps set correctly.

4

I doubt it is a color space issue. Could you simplify the scene and attach it here? Just a plane with the shader exhibiting the difference should be fine.