Wwise/Unity weird bugs on Android devices

Question

Hey guys! I have a very wierd problem with Wwise/Unity. We are developing a simple multiplayer topdown shooter on Android (on different models) and when we tested it last time we had very wierd audio behavior - some sfx are not playing sometimes (but for example sfx for rocket launcher playing just right everytime) and music from playlist container plays two tracks at once (instead of one random). When we run it in Unity everything is fine.

WWise and Unity profilers shows that everything is ok.