Steam Audio crackling/cutting out with only 4 sounds

Hi all,

I’m having an issue with Steam Audio and Unreal Engine 4. I only have 4 sounds in my level, yet everytime I play through at least one of them either crackles or loses it’s reverb.

Has anyone else experienced something like this?

Example 1 - (issue at 01:31) - https://drive.google.com/file/d/0B-D7CixMNvhFdW1zUG4yc0lzRVU/view?usp=sharing

Example 2 - https://drive.google.com/file/d/0B-D7CixMNvhFaUVmeWVxUUNPV0E/view?usp=sharing

Thanks in advance,