I'm having the same issue with in-game voice chat in Fortnite, on Discord and now some colleagues could not hear me well on a Meets call.
I tried every solution posted here, but no use.
Like a lot of people commented before me, I can't believe this is an issue for a US$ 100 item (and I bought it in Chile, so, actually, is way more expensive than that).
I need a solution because I can't return it now and can't believe the only solution comes from another user with a workaround.
Thanks by the way, I'll try it @Necromancer49.
Although I believe is Corsair responsability here.