Cutscene/Cinematic Frame Rate fix

So, I've known about the fix - more or less - since it became available, but have never used it.

Last night I used it (in the Origin command line, if that makes a difference) and got the 60fps that I get when running around the game world.  While characters were talking, everything was fine - but when they were moving without talking, or there were simply environmental shots - everything had 'sped up', to the point where characters would sometimes 'blink' to a location where they'd speak and two cutscenes cut off the very end (one in the middle of a line from Dorian).

Is that "working as intended"?  Or did I make a mistake somewhere?

For the moment, I've turned the fix off again because it never really bothered me - I'd rather have solid gameplay fps than cinematics - but I just thought it was weird, and I've not seen anyone mention it before.