No they dont lag, or repaint, only problem is on 4HR to get the position open AS SOON as they arrow pops up.Hard to watch it all the time to get best entry.Needs an EA to open and close positions purely from the indicator arrow not using any market data.
What ive noticed though is, sometimes the arrow dissapears after indicating a signal.
Very rarely it does this on 4HR however I think when it does you can consider the signal fake due to the market being flat and no volume.
Here is the other part of the system apperantlly its used to determine the strength of the signal trend.