This plugin isn't really designed to allow for such a usage.
Calculating paths each tick out of a target that may be indeed out of layout will cause it to freeze/crash.
And I'm really not sure how to prevent it atm.
If you want to preview a path for your unit though, it's another logic to be used.
I'll include another example with the release.
It might take more time than just a couple of days as this is not the only matter on my hands.