So all of the 'netcode' improvements done by DICE don't do shit if you don't change this newly added setting in the gameplay tab to 'High'
Sure, it's fairly silly that it's a setting, and a non-default one at that, but that's how they've done it. If your setting is on 'none' then you are not only not experiencing the improved tick rate, but you are playing against players who ARE. This exacerbates not only issues of dying behind walls, but even dying right after leaving cover, since the enemy is receiving your information quicker than you're seeing what you're broadcasting (this is a severe simplification, but you get the gist).
Sorry if this has been mentioned, but I played with several of you guys last night who didn't know about this, so I thought I should make a separate thread to announce it.