Problems with Phottix Odin

It still sounds like you have some issues there to me, you shouldn't be getting so many misfires even with HSS on.

As mentioned previously the first thing to test would be to watch the flash carefully to see it has always recycled before taking the next shot. That will rule in or out flash recycle as the issue to start with.

I've never had misfires from the Odins, where the PW TT5's its not uncommon to have intermittent results.