Yeah, it’s not the best. I figured out that the unkown errors are generally due to dTube not knowing that you’re logged in, logging out and back in again generally works. It sucks really bad if you have a long video to upload though, getting to the end of it just to see it won’t work. Also, like you say, videos only buffer sometimes. I still use it because I’ve mostly figured out its kinks, but only for posting.