4.27. Huge RAM usage when Path tracing in movie render que, is it normal?

Mike_11
Fri, 28 Jan 2022 08:59:57 +0000
Rendering

I have a dense scene with architecture and lots of foliage, it uses 8 GB of Vram and 9-15 GB of RAM when open in editor, and FPS is great considering the scene complexity. (RTX 3080)

Using High res screenshot I can render out great images with the path tracer using 900 samples @ 1440p or higher, and resource usage is similar to normal editor operations.

The same scene in Movie render que with similar resolution and sample’s is much heavier on RAM.
It tends to hang around 50+GB of RAM usage, and there is only 5gb “shared” vram usage spilling over from the GPU according to task manager.

Has anyone else experienced this and or does anyone know if it might be a bug or is it just the way render que works?

The path tracer looks fantastic and I am eagerly awaiting path tracing support for Volumetrics , splines and decals.

10 posts - 6 participants