Bitdefender OS Network Helper Process uploading something and slows down system
I'm using Bitdefender Internet Security and notice something. A process called Bitdefender OS Network Helper Process (bdntwrk.exe) is uploading someting using port 53. I don't know what it is doing, but it use a lot of data to upload. Not only that, it slows down the system A LOT and make it barely usable.
Currently, my workaround is to block connection from it and it works.
So, please tell me what this process is, what it is doing, and if this is an error, please fix this.