Audio problem: When Elise is investigating Ted Garza's home and begins to explain how she had seen the female ghost before, she says the line "when I was sixteen years old." However, the words and her mouth movements don't QUITE match. She appears to be saying the right words, but the audio just isn't quite lined up right, likely due to the line being re-recorded in post.
Audio problem: After Elise notices that Ted Garza owns a lot of her family's old belongings still, he gives an explanation about why he held onto it. In the wideshot where he's in the background, if you pay attention, much of what he says doesn't quite match his lip movements, revealing the dialogue was slightly rewritten and rerecorded in post.
Audio problem: When Elise is talking to Specs and Tucker about her childhood home after Ted Garza calls her, when she says the line "because I could never forget the look on my mother's face when she died!", her mouth movements don't match the audio in the slightest.
Audio problem: When Elise sends Specs and Imogen to get the bible from upstairs, Tucker protests, saying "he gets bible camp with the most beautiful girl on earth...", but his mouth movements don't quite match the words "he gets bible camp", revealing the line was re-recorded in post. (The rest of the line matches, but not those four words).
Audio problem: At the start of the second night of the investigation at Ted's house, Elise says "Why did you say 'help her'? Help who?" While the camera is focused on Tucker with the microphone, you can see Elise's face at the bottom of the frame and her mouth is not moving at all.
Audio problem: In the opening scene, when Christian asks young Elise "How did you know that?!" after the talks about the man who was just executed, his mouth isn't moving. (True, he's out of focus in the background, but he's not speaking).