I have 8 simple multistate objects. Each object contains- State 1: a red light, State 2: a green light.
All 8 objects are triggered by 1 button, and all 8 "lights" change from red to green as expected. Instead of all 8 lights changing simultaneously, I added a small delay between each object state withing the animation timing panel, so the 8 lights change in a quick descending sequence.
With all this setup, the EPUB interactivity preview shows the timing delay working perfectly, but after exporting HTML with in5, the timing delay disappears and all 8 objects change states simultaneously.
Also worth noting, when using Adobe's publish online feature, the animation timing works as expected.