Yes, it happened once in agios when i was in RP randomly, but recently i've noticed it's done it a lot of times when i've been restrained for a while which is weird ?
That is strange, I don't think there's a connection, what headset were you using before? Did it use any kind of software like Razer Synapse etc..? Could be sound drivers conflicting.
Also make sure the Hyper X Cloud II is set as the default recording device in Control Panel > Sound
I had shitty turtle beaches, and this Hyper X uses USB, however every time i turn my computer on i have to enable the headset as the default communication device every time