The recently introduced visual dicom browser achieves low “time to first image” (thumbnail). Then you can right-click to browse all the slices (using “view metadata”), but at this point double-clicking to load all the slices and browse in the slice viewers does not add too much time (and it allows you to see reformatted views).
If you want to browse faster then an alternative is to convert DICOM to NRRD and go through many series using CaseIterator extension.