We optimized the PTP symbol in air interface for 13.3. This optimization leads to an increase of around 3.6 Mbps in each of the supported bandwidths, while operating in 8x levels.
There are no configuration settings needed to be made to take advantage of this increase.
Please note however that since the air interface has changed from previous PTP 450 software versions, you MUST upgrade the far end (remote end) of the link first.