Razer Huntsman Elite v2 sound button not working

Hello my top right sound volume button dont work correctly since always when you turn left or right the volume dont change much. I try to explain better when you turn anticlockwise sound should go lower but he go up and down ect a little i cant really go from 40 level to 0 level it keep doing like 38 40 42 then 36 40 Same things clockwise when the volume shoudl only go up all other key from my keybord fonction great and i really love this keyboard it dont seems i can remove this button to see under its not like all other button form this Keyboard If soemone have faced this or can help It will be greatly appreciated Thanks to you all and a wonderfull day Tylouh