[[Problem] Luxa2 Lavi X - Really bad audio lag]

hi

I purchased luxa2 lavi x bluetooth headset yesterday, paired it with my phone and sterio sound seems to be working fine but :

it has a really annoying delay (more than 1.5 sec) while playing games on my phone or watching some video clips or listening musics

I have other bluetooth headsets but none of them has this delaying sound problem

 

plz help me solve it!