@arsaib.
Yes, this is just a personal problem I have with the film, and i wasn't able to find anything that would support my claim. If I get the opportunity to speak with Schmid in the future I'll ask him whether this was the case. 

Speaking about not being "personal" enough, I found this the only problem in Ulrich Khler's most recent film "Windows on Monday". At the screening I attended he said that the film was an experiment of sorts, because he doesn't have the experience of the situations presented in the film,and that he was inspired by observing patterns of behaviour by friends and talking to people of his generation. He wanted to put such persons under extreme circumstances and see what happens. Watching the film often feels like this, but I felt a lack of "authenticity". 

If I talk about Carlos Reygadas "Battle in Heaven" for example, I feel that the director himself is part of the experience he is describing, and isn't talking about anything outside of himself, no matter how absurd and grotesque (and stylized) many of the scenes might be.

Somehow I always need this "speaking from the heart" for a film to be great.
That's also something which makes a huge difference between Vertigo and Shadow of a doubt for me.
Though this happens in an "artistic" fashion, with Vertigo I feel as though Hitchcock is sitting in front of me and spilling out his heart, while Shadow of a doubt or even more so The trouble with harry shows me someone performing a prestidigitation and having a lot of fun, which isn't a bad thing, though i don't find it anywhere as inspiring.

I know this is highly subjective, and people react in different ways towards different things. But this is as good as I can express it at the moment.