sound problems on lenov a12 amd r7 laptop

Hi, i can play the game on my Lenovo laptop with an A12 processor and r7 graphic card 2 gb vram, laptop is 12 gb ram, i tested around and i can `play the game even in the highest settings so there is no problem with the graphic card BUT: the SOUND is horrible it jumps all the time and in enemy confrontation and battles its just one big mess.This happens in the lowest settings as well as in the highest setting.
a shame this is spoiling the playing of the game and the experience.

region spain, lenovo : AMD a12 , R7 2 gb ram, total 12 gb ram, 4 ddr, directx 12, win 10