Yes, I only have source on my stream.
I’m not in an apartment, I live in my own house with FIOS which isn’t shared like Comcast among everyone around you.
Again, the buffering is ONLY when trying to watch MY OWN STREAM between 6pm EST and 1am EST.
I have located the issue last night though. It’s Verizon throttling Twitch between certain times because they’re currently bumping heads. Before 6PM EST and after 1am EST, I have NO ISSUES.