   64 steps: sweep best 0.0861 -> 0.6611 | look-ahead 0.224 (h=8, 48 steps) constant -> 1.0116 (1.53x) | + schedule -> 1.0116 (1.53x), 0 rollbacks, kept constant, final rate 0.224
  256 steps: sweep best 0.0304 -> 0.3026 | look-ahead 0.128 (h=32, 226 steps) constant -> 0.5770 (1.91x) | + schedule -> 0.3159 (1.04x), 1 rollbacks, kept decay, final rate 0.0642
 1024 steps: sweep best 0.00905 -> 0.2714 | look-ahead 0.0785 (h=128, 934 steps) constant -> 0.5976 (2.20x) | + schedule -> 0.2726 (1.00x), 2 rollbacks, kept decay, final rate 0.0196
