We have found that V3 can bloat and use ridiculous amounts of memory during normal operation. Particularly with things like nutcracker effects, large element counts (eg. pixel displays), and imported V2 sequences.
This epic is to track issues related to runtime data and memory problems, and the work needed to resolve them. It doesn't concern the data format V3 uses to export or persist data; that serialization work is handled in VIX-376.