What do you mean by ‘channel’? Do you mean 6 Audio tracks? Are the sounds triggered on the timeline or a parameter? It sounds like your game code could be causing the excess triggering, i’d recommend hooking the fmod profiler up to the game, and clicking the dark box at the top related to ‘voices’ and ‘instances’.
If you are triggering a sound box very quickly and the sounds layer up a lot, then you can limit that by expanding the trigger behaviour tab for the multi-sound and adjusting polyphony/stealing behaviour.
regards,