Update dmesh'es to 'proper' (i.e. with centers) version 2.
Update all the dmeshes to versions 2.
Smaller (and of better quality!) meshes.
Read the meshes from .dmesh files (rather than compute them dynamically).This (along with single-mesh mode) hopefully makes the rendering much faster, while keeping the time needed for Object Change low.
The only downside: this increases the size of the release APK from 6 MB to 9.6 MB.