We have had problems with Disney, Chromecast and Amazon Prime Video. Prime started when they upgraded and I had to get a Firestick at no charge, in order to see certain movies per Amazon. I connected the Firestick and noticed I had problems, they said it was my internet provided. Don't you get tired of each party telling you it is the others fault! Netflix we have had no problems. Use not be so complicated. My smart TV is hardwired to my router, the Firestick and Chromecast my Asus shows them as wifi connected, I do not understand that as my TV is hardwired, and I set them up for that, but they show WIFI. I have roughly at times 15-21 items connected to my WIFI. 7 Nest cameras, 3 Nest Protects, and I have had those 3-4 years never had problems until a few months ago. Cameras will alert me as soon as WIFI is weak with a email or message from APP.
Im brain storming out loud, as to why speeds drops between 5-7am, unless Spectrum is doing major upgrade to their network on hardware side or software side. Or perhaps daily maintenance. But mainentance can be performed on daily basis incrementally with out hindering customers experience.
I get up between 4:30am and 7:30am, depending on the day of the week. But all I do in the AM is look at memes while I poop and listen to live stream FM radio, which uses very little data while I make breakfast.
I have an ATT 4G LTE hotspot as my home internet. And even in the busiest hours, when all my neighbors are at home, it barely slows down, even though my plan is part of network management based on how busy a tower is. I have +500 neighbors and my speeds never drop bellow 80Mbps. I live next to 2 shopping plazas(restaurants, shops, lots of customers and people , not all ATT customers), and next to main road in my county, that goes through 5 cities. Look up Rockville in MD and 355 road.
One thing I can think of, is Spectrum business customers, doing heavy data back ups at those hours. But for a business, its an odd time to perform any kind of backups. You want to do backs ups between 1am-4am, when no one is in the office, and while everyone is a sleep in your time zone. Unlike 90's or yearly 2000's, when every one heavy relied on local dedicated server with tape backups. Back when when 56k modems were still a thing.
Having that said, we also don't know if there are commercial/business customers (Google, Apple, etc) in a 5 mile radius outside of your home. Depending on a type of business, you could be living few miles away from a Data centers, that uses Spectrum as their sole backbone.
Im brainstorming out loud, trying to figure out as to why your speeds drop between 5-7am.
I don't know where you live and what's around you. I have no single answers, there is lack of information as to why Spectrum limits your data at specific hours.
In Ashburn, VA. there are a WHOLE LOT of data centers. You name a big boy company, they have a data center there. but I have no experience or knowledge , if Cox(cable internet) customers have internet issues.
You could sign up for T-Mobile 4G LTE home internet. $50 which includes all fees and taxes.
Another option is
https://calyxinstitute.org/membership/internet
