I guess I liken this film to skipping stones. Standing along a beautiful river in a wonderful woodland setting, we look for perfect flat stones to skip repeatedly off of the surface. All of the elements of entertainment are there...setting, cast, beauty. But we are entertaining ourselves artificially with rocks that inevitably sink (that narration device and blaming "love" for so much and "you" as the wholly uninteresting player, are such examples), and the talent is also uneven. Elvis' classic songs modified at will and Hanks' accent that lapses into Gump, made me tired.
When you check your watch throughout a film, it's a clue the timing and tempo are off, which is an ironically unkind to do to and for Elvis.