I find the YT presets work very well.
Choppy YT playback might be a poor Internet connection. Post a link, I'll check here.
Usually with the YouTube preset the titles that I make comes up choppy and shaky but the video is fine
Is there something I'm missing?
Not sure. Haven't had any problems with titles.
Post a link of the video without titles, and one with titles.
What are the dimensions of the video you are editing?