Unreal 5.6 Render layer Bugged?

Development Cinematics & Media
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So, I´ve spent all day today troubleshooting an older project I needed to update and render fresh….

Everything worked fine until I got to rendering.
I had set up a couple renderpasss sequences and one needed toi render various objects into various additional layers in a multilayer EXR.
This had worked fine before, but now it kept crashing.

After several hours trying to pin point the problem, I arrived at the render layers being the culprit.

Scene is quite heavy with tons of foliage, but rendered in 10 mins for 3500 frames in 4k on my 3090 before, using DLAA.
Also tried normal antialiasing, but was way slower and also crashed when I enabled layers.

Now, I was able to render the main beauty pass, but still need those layers, setting up manual overrides for dozens of objects on those layers is a last resort, so I wanted to know if anybody else experienced crashes or physical ram maxing out when rendering with layers?
Can´t reproduce it on a very basic scene, there is still considerable slowdown, but it renders without crashing.

Definitely worked a few Unreal versions back (maybe 5.2/5.3) and I don´t think I changed anything so radical from the old project…

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Can you be a bit more descriptive? When you render one layer its fine but if you render a lot of layers it crashes due to memory? There is an additional memory overhead for each layer. Especially with multichannel exrs. Do you have texture streaming turned off in Game Overrides? Thats probably the number one thing I see crashing renders.

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No, I can’t be more specific than “Same render worked in previouy Version with same settings in same map”…:slight_smile:

And it only happend when enabling stencil layers, without it rendered.

Although its probably my gpu or psu.

Had more random crashes in all sorts of situation with and without rendering or even without unreal open, die tons of testing but as the crashes kept happening randomly and I couldn’t reproduce them, I am now replacing my PSU and then my GPU, as those seemed the most likely candidates after testing.