Audio Alignment question

Regarding RX…
We had Izotope sales dude visiting us here. Even tho where this happened is purely a Pro Tools house, I asked about what is going on as SB says the problems are because Izotope has not implemented the vst specs correctly and there are so many problems using RX on Nuendo. He “kind of” skipped the question. That tells me all I need to know where is the cause for these problems. Then I asked about will ARA change the situation? He was not quite sure what ARA was and replied something like isn’t that the thing with melodyne…
So I would not hold my breath for Izotope to fix these issues. Sad but true.