When producing a 3DTiles model via CC it optimizes the model for maximumScreenSpaceError = 1, while the default value for CesiumJS and other viewer is 16. This causes the model to load LOD levels incorrectly, resulting in a low-poly model unless fully zoomed in, which isn't practical for viewing.
While in CesiumJS this can be avoided by manually setting maximumScreenSpaceError to 1 when loading a tileset, not all viewers expose this setting.
Is there a way to export 3DTiles for the default value of 16, or convert the exported tileset to 16 after the fact?