Decoupling capacitor - logic supply. Decoupling capacitor - load supply. Rs, should be connected as close to the device as possible. Also, Rs should be non-inductive, and the circuit board ground run should be as large as physically possible. Use external Schottky diodes in parallel with the internal diodes.
Heat sinks are also a possibility.
However, Schottky diodes are typically the preferred solution. A ground plane area at least two times larger than the package outline is a good place to start. Not at this time, but one is planned for the future. Like typical shift registers, the most recent bits are the ones that are retained. As an example, if 24 bits are clocked in , the last 19 are the ones that will be used.