everyone is insane or I am and plot hole

I had a completely different experience than anyone else seeing this movie apparently because I thought Ashton and the rest of the cast was amazing. I felt so connected to all of them and the horrible things that were happening to them. I was just as scared as Evan to wake up not knowing what will be different and where he'll be and I thought he acted it very well. Every time I dried my tears from the last situation something else happened. I was litterally crying through half the movie. This is NOT normal for me at all. During his last trip back I lost all control. Call me a weepy girl but most people's complains about the movie are that Ashton didn't do a good job but my reaction says otherwise. The only thing I haven't figured out is what caused his blackouts in the first place. They couldn't all be caused by traumatic experiences(butcher knife, drawing in school). I've been thinking through a whole time is cyclic so because he goes back in the future it causes the blackouts but it still doesn't all make sense So, if anyone has a theory please share.