Burns previously showed that a chromatic adaptation transform (CAT) implemented using spectral reconstruction with lightness preserving produces comparable predictive results of corresponding color data sets as optimized linear CATs. A fast spectral reconstruction CAT based on Wpt (Waypoint) spectral reconstruction is proposed that is optimized to take advantage of spectral reconstruction improvements without incurring the performance cost of using spectral reflectance. Comparisons are made, and an implementation using iccMAX profiles is demonstrated.