Why is TrueHD more demanding than DTS-HD MA?

[Warm Gun]

I just watched a movie with a 24-bit 48 kHz Atmos track. The sound played fine through almost the entire length of the movie, but there were about three scenes in which it cut out very briefly. Went I went back, it played fine. This isn't uncommon. It's much worse with TrueHD tracks above 48 kHz. Those cut out every every few seconds, forcing me to switch to the alternate audio tracks or Dolby Digital partner track. But TrueHD tracks above 48 kHz are very rare, which is why I don't think about it too much. Anyway, I don't think I've ever had any DTS tracks cut out on me, even when they were 96 kHz or higher. Are there more steps in the decoding chain with TrueHD? If so, why would anyone use it, unless it's Atmos?