Don’t forget the sound. Hans Zimmer’s organ-heavy score is half the experience. A dedicated soundbar or surround sound system is highly recommended.
Note: Over-the-air broadcasts are technically compressed, but they are often cleaner than pirated web-rips. Interstellar Free 4k
Simply put: Watching Interstellar in standard HD is like listening to a symphony through a telephone. Watching it in 4K with HDR is being in the concert hall. Don’t forget the sound