Twitch live streams hang from 7 p.m?

Hello livestreams on Twitch are mostly on 480P from 7 p.m. While YouTube live streams are running at 1080P60. How can that be?

Twitch may have. Server problems

Yes, but it's been like this every day for 1-2 weeks

Probably because more people use the Internet from 7 p.m. For example, it is sometimes bad for me on Sunday evenings.

Yes, but how can everything else go perfectly? Doesn't make sense to me. And server problems are not either because it runs perfectly with mobile data

Ah oh oh I missed that the other one is sorry. Then I don't know either. Possibly restart router 🤷♂️