I use the ArcHydro Toolbox and ArcGIS 10.4
I ran through the regular steps of Filling Sinks of a DEM, Flow Direction, Flow Accumulation, Stream Definition, Stream segmentation, catchment grid delineation and finally catchment polygon processing. My result looks like the following picture. As you can see the catchments are always a little off. From my understanding they should always cut the segments of a stream nicely. Any idea what might cause this error and what to do about it?