Page MenuHome

Blender is impossibly slow with large scenes
Closed, ArchivedPublic


System Information
Operating system: Windows 10
Graphics card: Radeon RX 580 (8Gb)

Blender Version
Broken: (2.80, release candidate)
Worked: never

Large scenes (>1-2 km) are incredibly slow in blender 2.8 compared to 2.79. I imagine the problem is because of two things: the lack of a LOD system, and texture rendering. It basically kills hope of making cinematic city scenes, landscape scenes, forest, etc. I've seen this problem on multiple computers running 2.8, so it doesn't seem to be a machine-dependent issue with processing.

Create a scene larger than 1km or 2km and set the clipping distance to about 2km. Add a few hundred thousand polygons to the scene. Add materials and textures. Watch Blender cry.
I used the Scenecity addon to great frustration, and you could likely reproduce it with that.



Related Objects

Event Timeline

If you could attach an example scene to the report that would be quite helpful.

Brecht Van Lommel (brecht) claimed this task.

We'll work on improving handling of complex scenes (one of the tasks in T63728: Data, Assets & I/O Module).

However as a bug report this is not so useful, it's just an ongoing project and investigating performance of specific production scenes is outside the scope of the bug tracker.