“Throttling” is when your ISP purposely puts a bottleneck on your internet connection. There are lots of reasons for this, including making sure your internet connection doesn’t exceed the advertised bandwidth. Another motive is to lower congestion on the provider internet network. Refreshingly, instead of giving a non-answer to this question, Spectrum outright says, “We may temporarily reduce the available bandwidth to customers using high amounts of bandwidth as necessary to reduce congestion.” So yeah, expect a little throttling.