(54,11)/56 + golden ratio each frame, through Starlock's pass
  box 2        formula 0.0329  brute force 0.0330
  box 4        formula 0.0199  brute force 0.0199
  decay 40 ms  formula 0.0182  brute force 0.0182
  decay 80 ms  formula 0.0105  brute force 0.0105
and with sqrt(2) - 1 in place of the golden ratio: box 2 0.0324, box 4 0.0196, decay 40 ms 0.0182, decay 80 ms 0.0106