I loved the sound design and music in this film - I think it was the best part of the experience. Overall, the film felt long and a little predictable but definitely watchable and Ben Afflect wasn't too annoying. There was definitely a decent amount of ADR but Ren and co. did a good job of mixing it in. He mentioned the scene between Ben and his sister in the bar in particular. It didn't particularly jump out at me when watching it but I do a pretty good job of tuning off my professional side when I watch a movie.
And yes, if you work in edit or sound long enough you can easily tell when things are 2 frames out of sync. I've worked with numerous people (including directors) who will ask us to adjust sync a frame or two because it looks off and they are usually right.