2 things stand out on this video:
1) he has that early onset dementia open mouth going at the start of the vid.
2) he uses that streaming room as a degeneration space. Notice that he doesnt end the stream and go to the living room to crash on the couch and watch a movie. or even to the kitchen to eat there and not make a mess... no, he goes back to the same room he has spent the last 6 hours in, sits on the same chair hes been sitting the whole stream, and just stares at the same pc he uses to go live.
Its pretty common that druggies will leave most of the house uninhabited/unused, and just seclude themselves to a little rat hole, one single room where they can go and be filthy.
Think about that for a second... he doesnt even have a proper life outside of that room. thats why he also has a matress in it. thats why he barely leaves that room anymore.
thats some Kurt Cobain 1 month before shooting himself kind of behaviour