First video - Stage planning - you want to shoot the two on the right and 3 through the port all on one mag. Reloading while standing in the port costs you 2+ seconds.
Second video (well all of them, but you already mention this)- Your shooting of each array sounds like one two, one two, one two....instead of one two three four five fix. You are giving up probably 2 to 3 tenths transitioning between each target on this stage. Other than that your trigger speed seems fine. Solution is Blake drills
Stage 13 your plan was fine, you just have to realize in certain situations when you have no makeup shots to work with and plan ahead accordingly.