Most aspects = lot of pop-in & the fact you don't know how to run? Ok.
I really don't understand where the core of your complaints are exactly. If you are on PS3 I think you dash using R2 (may be wrong though). You can't also run into clickers because they one-hit kill you so you must either be stealthy or simply kill them using guns, knives, etc.
I wasn't trying to be an idiot and run into a clicker, I know I need guns or objects for them. I brought that up because I was bitten, and went into the death animation, with the clicker laying dead on the ground. I was being bit by nothing.
The issue is with the sniper.