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Hi folks,

i encountered some issues with an animation. Out of 101 frames 46 look like the attached one. They get seemingly inverse coloured square artifacts all over. The attached one is the worst of them all, some are artifacted to a lesser degree or more monochromatic. In final render output the squares on most images get black, but in the viewport or render preview they are always colourful like shown.

Scene:
up on request i could share the .ksp - but i as well opened a support ticked where i attached the .ksp for the luxion team

there are 5 physical light sources: an area light + a spotlight, both animated with a fade curve and colour fade. The Spotlights poition is animated as well. And 3 area lights static in the light. Turning all animations off provided the same results.

its rendered without caustics, in interior mode. 30 samples with denoise at .4 . The Artifacts get worse with more samples though. And they do seem to not appear in product mode.

System

MacPro 2019

MacOS 10.15.4

Keyshot 9.3.14

AMD Radeon 580X Pro 

Intel Xeon

I reported this april 9.th, 3 months ago. For a big this serious I find it unacceptable that it has not been fixed.

This has also been happening on my 2019 Macbook Pro running Catalina 10.15.5

2.4GHz 8 core i9

32GB DDR4

AMD Radion Pro 5500M 8GB 

This is after deleting the xml file as mentioned above. In viewport it kicks in around 30 samples, but in exports, it starts at 3 samples. 

This is a single body model with a simple plastic material with 0.1 roughness

Hi Erik,

I just have sent you my KS9Settings.xml file.

I just tried to render a interior scene again  that I have rendered some days ago, but today I got the artifacts - it's like gambling

My ideas: Intel Xeon TurboBoost Max 3.0 drives CPU-cores at different speeds - so some segments are not ready when others are finished? Especially when calculating ray-bounces?

ive sent you the file.

the fix deleting the Settings.xml worked the first time for about 10 frames, the secodn time it didnt work at all: even the viewport got artifacts. 

thanks nonetheless :)

This has also been happening to me on my 16" Macbook Pro Catalina 10.15.5 with 2.4ghz 8 core i9, 32gb memory, AMD 5500M 8GB running Keyshot 9.3.14. 

It also happens with 1 model with 1 body, simply imported with the startup HDRI and simple plastic material. It also exports like that in the final render as well.

I don't know if I'm just looking for patterns but if I restart Keyshot/ the laptop and wait for the fans to stop spinning, it works ok until the fans are at full speed again? 

It happens intermittently from 3 samples when I export the final image. In a queue of several renders, some might be ok but some will have the pattern. In the viewport it only kicks in around 30 samples.

Hej Erik, 

Is there any progress on this issue whatsoever? 

I have seen multiple others encountering this issue and i could also replicate it on EVERY Mac i tested it on, and usually i had not to wait long for this to happen.

The machines were multiple 2019 16" MacBook Pros, a 2014 MacBook Air, 2020 iMacs, iMacPros as well as 2019 MacPros.

But it does not seems to happen in windows at all right?

Its an issue that seems t be around since early April, which makes it now nearly half a year.

And it seems to affect the entire Interior Mode, so basically half of keyshot. 

Same for me,

iMac 2020 i9 10 cores

Radeon Pro 5700 XT 16GB

On my side, the issue does not affect final renders but viewport only (some renders fired, not a deep test, but they are fine).  It starts about around 30 samples as Sam say above. The issue does not affect my old (vintage) machines, Mac Pro and MacBook Pro Running KS under Mac OS High Sierra.

Both have a obsolete AMD Radeon Graphics card.

When I've experienced this issue on my new iMac in September  I thought it was related to a known 5700 XT 16GB driver issue recently fixed by Apple in last Catalina update...

GB (Radeon Pro 5700 XT) GDDR6

16 GB (Radeon Pro 5700 XT) GDDR6