If you want to find out best setting for zig zag, i must say always best setting of popular indicators are default setting in zig zag case 12 5 3.
But if you want to see more high and low points you can use 5,3,3 too.
Red zig zag drawn by default setting 12 5 3
Yellow zig zag drawn by 5 3 3 , where you can see more high and low points
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