> I have a pretty compressed version of Arrival that's at 2GB and is a 4k movie ~2hrs long (the original file was ~2x the size). To stream that we need to do 2000Mb / (3600s * 2) = 277.8Mb/s.

Your math is WAY off.

2 gigabytes / 2 hours is only about 2.22 megabits/sec.