Love "Arrival" but I won't nominate it for this list. It's for "physics lovers" and "Arrival" is more for linguistics nerds; the central plot of the film hinges on the Sapir-Whorf Hypothesis, after all.
In the same note of "sci-fi but not exclusively physics", I want to recommend "Another Earth"---very indie production, for better and for worse. Also, if you are a physics nerd, a certain plot point might irritate you. But, on behalf of the film, I ask you to grant it a bit more patience and suspension of disbelief. For me it hits the same dramatic notes as "Interstellar". Good quality intellectual entertainment.