It seems AvailableSettings.USE_DIRECT_REFERENCE_CACHE_ENTRIES=true causes the entity to be used as reference in the cache. Seems not to help in this case because this case is about a field of the entity and not the entity itself. Would it be theoretically possible to implement something similar for the field/attributeconverter to get rid of the attribute conversions when reusing objects from cache? Otherwise I have a lot of javatypedescriptors to implement.