Microphone of the headset not working on computer

I just bought a Razer Blackshark V2 X and my voice sounds “far away and like a robot” (according to my friends). I tried the headset on my cell phone and everything sounds alright but I have also tried another headset on my computer and it sounds fine. I have tried with two jack splitters (one came with the razer headset, the other I bought some time ago for my previous headset) and it is the same result. Already try this: https://mysupport.razer.com/app/answers/detail/a_id/5394/~/how-to-fix-headset-mic-or-microphone-issues-%28too-sensitive%2C-distorted-or