> It does, i tried. I got hundreds objects, even if i check every 10 seconds, the lag caused by the evet is there. Because i need to put For Each object -> create test sprite -> test sprite overlaps/dont overlap. Basically, it has to repeat the event for every object.
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(Emphasis added)
Creating a sprite is a far more performance intensive than checking for an overlap! Instead you should just have one instance of a 1x1 sprite which you simply position to the image point, then test for overlap with. If you are just moving around one instance of the "detector" sprite and not constantly creating and destroying them, it should be perfectly performant.
Awesome! I'm gonna try this