FMOD UE4 Event distorting

I’m creating a sound for a jet-pack which uses parameters to determine how much fuel is left.

The parameters work fine but the events spawning seem to be spawning infinite times, overriding the audio so that it distorts.

An example of the problem can be seen below

The error messages which load at the end of the video are all down to using the computer keyboard instead of an Xbox controller to use the game and have no error messages for the FMOD events.

It sounds like it is spawning infinite times but according to the Do Once node, it should not be able to. It may also have something to do with the way the event works.

I would connect the FMOD Studio Profiler and see what is actually happening. This will show you exactly how many events are playing.