The Tach Harmonic thing has been confirmed as a bug that will be fixed in an upcoming patch. They also noticed that Tetron ground Procs weren't working either. Really annoying though.

And I think the Invisi-torp thing is that the Game is only displaying a certain amount of effects, and its simply not drawing all the shots that are poaring out.

Personally I'm giving serious consideration to breaking out my Aegis sets again. All the Plasma burns are annoying. At least the Aegis can adapt to plasma, and having a strong Resistant shield is useless when it's your hull that's on fire.