We have a World Partition map with dense geometries, and have tried several schemes trying to optimize the streaming performance (among which: compute LODs for actor meshes, modified grid type, cell size and loading radius, tried to split actors in different runtime data layers), without success so far.
When navigating the scene and new cells are loaded, very often we experience hiccups and cannot reach a fluid streaming experience.
We’d like to obtain more insights on the cause of the stuttering, in particular if the main cause relates to:
- the number of actors in the cells (this alone does not seem to have an impact, for instance if we create the same number of actors reusing the same static meshes)
- the size/complexity of the geometries
- the number/type of materials
- other?
In addition, when testing the scene in with the editor’s Preview, in some cases it is very smooth, as if something was already “pre-cached”, even though the cells to be loaded are red in the 2D hash debug view. While the packaged application always shows the stuttering.
Which instruments can we use to obtain more details?
We could not find specific metrics in the stats and/or Unreal Insights to find our answers.
Thanks