Hello papero76,
Because you have written your message in english, I moved your post into the english forum 🙂
If you want to smooth a signal, lag will come with it. Smoothing a value over time means you want less movement of it, and to not react quickly to what happen.
If your request is to reduce false signals of a specific indicator value, then smoothing it is a good option. Also you can also use mathematic signal filtering like Laguerre, etc.. Digital filter are more filtering than smoothing, so it is another option ..
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