Headset broken?

[Premoz1]

Hello, my microphone has been like this for last month. I have sennheiser gsp 600 and I had it for 2 years and its first time im having problem with it. 

https://medal.tv/games/gta-v/clips/72793712/d1337ftVHYjS?invite=cr-MSwzVFIsNzU5MDcwMCw

 

Above is clip what it sounds like. This sound starts after im being quiet for 10-15 seconds. It doesnt start always when im being quiet. It might start after 5 minutes of being quiet or immediately and lasts from seconds to minutes. 

 

Then sometimes when I talk my friends say that there is very loud crackling/popping sound. I have heard that sound from my friend's clip and it's really loud. It happens rarely too but atleast once in 30 minutes. 

What might be the problem, these headphones have been really good and it's first time having problems with them. My audio drivers are updated

 

Btw while writing this I had discord's mic test on and I heard the muffling sound in the clip above 4 times. It just starts randomly and ends randomly.

[Kilrah]

If nobody responds it's likely that simply nobody has anything to suggest.