I think I got the same model and I love it. Did you try changing the type of mic on the realtek panel?
I have only one audio device, which is my headset, and one mic device, which is my mic's headset. My mic audio is at the highest one, with 2 channel, 24 bit, 192000hz (studio quality). I'm not sure what to do because I recorded this with OBS and even changing things on there don't work. But when I'm talking to my friend on Discord, there is NO problem. It's weird.