The sulfate/chloride process has shown indefinite electrolyte life, process stability, ease of use, and excellent exterior corrosion performance. From an operational performance standpoint, throwing power is much better with trivalent chromium.  Trivalent chromium is also extremely forgiving with respect to current interruption (this feature eliminates the occurrence of white wash commonly experienced with hexavalent chromium). The advantages of improved covering power and uniform thickness have eliminated the need for use of auxiliary anodes for plating difficult geometries.
https://www.pfonline.com/articles/how-trivalent-chrome-compares-to-hexavalent