Roku looks to be seriously tightening its pursestrings. The company’s laying off a full ten percent of its workforce, over 300 employees, in addition to a conducting a number of other cost-cutting measures, as reported by Variety. These job cuts are just the beginning, as Roku’s also removing streaming content, consolidating office space and reducing outside service expenses. The goal here is a major reduction in the year-over-year operating expense growth rate.
The buffers on streaming devices are much smaller on these devices because of how cost reduced they are. You’re way overselling how large they are.
Also, 80mbps is actually a pretty common avg bitrate on 4kuhd blurays. You have 100gb of disk to play with and they generally want to use it as much as possible.