Lightroom 5.6 was one of the final iterations of the "perpetual license" era before Adobe transitioned fully into the Creative Cloud (CC) subscription model. For many photographers, this version represents a "goldilocks" zone of performance and essential features without a monthly fee.
: Resolved various performance issues and glitches reported in earlier Lightroom 5 releases to improve overall stability. adobe photoshop lightroom 56 final 64 bit c