Sony Xperia Z3 volume fluctuating

[ludlew]

When I listen to music with my bluetooth headphones the volume keeps fluctuating in the tracks, the volume gets lower in "drops" in tracks. This doesnt happen to me on my desktop. I have tried to look up solutions and i found that trurning eq to standard would fix it but i cant live without my bassboost, when playing tracks on desktop i use Razer synapse for bassboost and it works perfect. I would really appreciate help!