Found a great video, posted below that shows you a good visual comparison between Low, Medium, High and Ultra Battlefieled 4 video game settings.
Video shows there is not much visual difference between High to Ultra game settings.
Also the “Network Smoothing” setting within Battlefield 4 settings:
My default “Network Smoothing” was preset at 40, hit detection for the most part is not that bad. Some say it should be set at half your average ping. Which sort of correlates again with,, choose low ping servers, when possible.