I can create bulk annotation in a file geodb in ArcObjects much faster than in ArcGIS Pro SDK. In ArcGIS Pro SDK, I'm using the way described in the ProSnippets in the following way:
RowBuffer rowBuffer = targetFeatureClass.CreateRowBuffer();
rowBuffer["LAYERNAME"] = "";
AnnotationFeature annotationFeature = targetFeatureClass.CreateRow(rowBuffer);
Is there another way to do this that's much faster?