bluetooth audio "bug?" report

[Hagane023]

I have an issue whereby the audio itself fades in and out Using either Bluetooth headphones or speakers. I am using Ppsspp on my ipega 9501 running android 4.4.2 however this issue isn't present when I use ordinary headphones or the speaker from the device itself. ( I cannot use headphones anymore as the headphones Jack port is faulty and I can't get it fixed) I also have tried numerous graphicaudio settings but still have the same issue. Anything I can do to help sort this?