This was the first anime movie I have ever quit half way through.
I watched 5cm per Second beforehand, and enjoyed that, but I soon realized this was basically the same thing all over again, except worse. It was dry and boring, the characters were all so shallow, and the scifi elements were quite bland.
It also didn't help that the entire time I felt like this movie had its
bloom effect on way to high, and for way to long (read: the entire movie). In fact, this seems to be like a defining style for Shinkai (as it's alsp present in 5cm PS) and it gets aesthetically boring quite fast.
Perhaps it may just be that I've just been spoiled by master storytellers like Satoshi Kon, Mamoru Hosoda, and Miyazaki who know how to utilize the medium of animation itself to beautifully unravel a story.