Sound mixes cannot be applied in GameInstance Init event

Hello again Acren,

I was able to reproduce the issue you are experiencing. I have reported this issue, which you can view here:

You can track the report’s status as the issue is reviewed by our development staff. Please be aware that this issue may not be prioritized or fixed soon.

On another note, I did not have this issue occur for me in the standalone game and packaged build. Depending on the mode used, the order in which things are called can change. So on my end, it appears this issue is happening in the editor only.

Cheers!