Hi S3, welcome to the community and thanks for posting! If you were to use your up your Anytime Data (between 8:00 a.m.- 2 a.m.), your speeds would be reduced. However, once you hit the Bonus Zone hours, your speed goes back to normal. If you're experiencing slow speeds during those hours, I'd recommend making an account for testmy.net and taking speed tests (you'll want to select "Manual Test" and select 25MB) during those hours and then sharing the results here.
As far as scheduling downloads, you can find out some info here if you use Firefox. In addition, if you let us know what devices you're using (apple, android, PS4, etc.) we might have some tips to offer. Personally, I know that on my iPhone when a system update is needed, I get a window prompt to ask if I want to do the update now or later, and I always select later and the phone will run the update between 2 a.m. - 5 a.m.
Hope this helps. Let us know if you have any questions.
-Brooke
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