The key word is *rough*. It hooks the wndproc of every litestep window, then keeps track of how long the module takes to respond to each message. There are a good number of things that will make it crash or report incorrect information.

And I haven't released it because right now it puts this information in an unconfigurable white box at a fixed location. It was basically a proof-of-concept, then I wanted to make it use whatever evolved from skinbox, which I haven't finished yet. :/