Was thinking of a way to stop the STKM from interacting too much with particles he should (mostly gas particles.)
So maybe a way to get around this would be to add that he emits a little air to move the gas out of the way? doesnt matter whether he is spawning particles or not.
Hope it is an easy fix

Im intrigued to know how?
sorry if i have offended you by offering a solution to the thing you created.