I can't imagine generally that a TTSX could go too fast unless there were some degree of production error that caused the mono- to be too hard and brittle in which it might break up on bone, or just way too soft. And if with regular TTSXs, petals fly off for whatever reason they become secondary, diverging mssiles, causing potentially even more damage than just the primary path damage an intact bullet would cause.
It never hurt Nosler Partitions to lose roughly 40% (+\-) of their weight en route through whatever beastie they meet. In fact they were made that way.
