Family of 4 here. 3 gamers of us are gamers. We stream a lot bit we do not upload much. Download we are at roughly 1.7tb. Upload 184 gb.
If you are at 600gb for upload, that to me, is a little odd and high. Might want to look into what is connecting out and what is being transferred.
I didn't think about that option. I know I have that off on steam, but I am not sure if my kids did.