We indeed follow the monitor V-Sync, by design.

Most likely a VSync issue, especially if it's exactly 120Hz. Try disabling it in the Nvidia control panel.

I'm going to assume this all these recent macOS bugs are about the same issue.

Ok then, If there's nothing to be done about it.

The noise is smaller than the size of a pixel in the cubemap, and thus the small noise disappears in the downscale process while the few ones that appear look big because that's how big the pixels are. It's like downsampling a picture of stars in photoshop, that's what happens, and no filtering algorithm would solve that 100%. It's definitely NOT procedural textures changing scale, because then it would change scale even with big textures like in the imaged I used above

Moire effect doesn't explain this:

What you see is a combination of a moire effect, due to small scale of the texture and the low cubemap resolution. Another way of putting it, the texture is so small than when it's captured on the cubemap filtered at a lower res, it just happens to look like a large scale version of the same texture, an optical illusion. But if you use any other procedural texture, or the texture at a larger size, you see that lowres cubemaps don't change their scale. Like in this image with the lowest cubemap resolution possible.

Ok, thanks for testing, will consider this resolved for now then. Transparent shadows indeed are tricky for realtime rendering.

In T60425#624103, @Brecht Van Lommel (brecht) wrote:

I'm not sure what is meant by BSDF shaders. Diffuse and glossy are BSDFs too, in fact only BSDFs can be affected by shadows.

I'm not sure what is meant by BSDF shaders. Diffuse and glossy are BSDFs too, in fact only BSDFs can be affected by shadows.

I don't get it. I can mix base color maps, metallic maps, roughness maps and normal maps using mix RGB nodes and screen space reflection works just fine. Why is mixing shaders any different?

In T60425#623463, @Artyom Abgaryan (AbgaryanFX) wrote:

This happens with BSDF Shaders

Okay, talked to Clément and this is working by design. Although mixing RGB is fine, there is no way to reasonably mix SSR data.

So I can get the transparency to work by changing the object blending mode, but the shadow does not appear to properly represent objects with transparency - however I assume this is standard/expected with eevee presently.

The issue is on the ssr_data calculated in bsdf_common_lib.glsl:closure_mix().

Hey Brecht,

This happens with BSDF Shaders

This mostly happen with BSDF Surface / Shaders

I just noticed, that even when you mix two separate identical shaders there's still a difference in brightness. You can see that in the video in 00:25 on the lower right corner of the box, there's a slight variation in brightness.

In T60462#623268, @Marcus Papathoma (machieb) wrote:

I had the same problem last week. One of my files cashed at random while rendering in cycles. I tried rendering on CPU only but it crashed too. It was impossible to reproduce. Then with an older Beta version of Blender 2.8 it rendered.
I will have a look on it. I have to render a lot in the next weeks, maybe I can reproduce the problem or it is solved already.

I had the same problem last week. One of my files cashed at random while rendering in cycles. I tried rendering on CPU only but it crashed too. It was impossible to reproduce. Then with an older Beta version of Blender 2.8 it rendered.
I will have a look on it. I have to render a lot in the next weeks, maybe I can reproduce the problem or it is solved already.

I'm rendering in Cycles and it does regularly crash in the first 50 frames. Although I did start at frame 16 and made it all the way through 160 once. Once. *sigh*

In T60462#623064, @Mark Gardner (ut_markle) wrote:

I guess I can start with system specs...
Windows 10 Home 64-bit
Intel i9-9990k
Nvidia RTX 2070
32 GB memory
Blender version 2.807d792976e100

also i can report that on nouveau(kernel 4.19-4.20) i have this issue with specular https://youtu.be/LFdSW_VYpBc

I guess I can start with system specs...
Windows 10 Home 64-bit
Intel i9-9990k
Nvidia RTX 2070
32 GB memory
Blender version 2.80.7d792976e100

Brand new Blender user here looking to dive in and found this thread for my crashes for animation.

Thanks so much Blender team - you are the most awesome people ! - I am so gratefull for the work you do! This fix was really important to me as well :)

If you're not already subscribed to https://fund.blender.org/ go do it now! You can start as low as $6 a month :)

@Brecht Van Lommel (brecht) , I wanted to thank You personally, but the support of the whole team is also important. Thank you very much for the work!

@Vladimir (evilvoland): anyone is welcome to contribute to the development fund, this bugfix was funded by it.
https://fund.blender.org/

@Brecht Van Lommel (brecht) , I do not refuse my words, please tell me where to transfer money?

I think this is what you asked. Would you mind checking? :)

Thank goodness!
Thank you Brecht Van Lommel 👍👍👍