For me it was the controls. Worst part is, I can't put my finger on why the controls/feel of this game felt so much worse than RE4. Either way, I made it about 10 min as well. Fortunately I bought it used for like, 4 bucks or something.
Put me in the group of people that wish for a new RE1 style RE.
even RE2 would be passable. I absolutely fought the idea of ever liking the new style RE's, but eventually caved and played 5.