I started a test of convergence of rollouts without variance reduction. I only got to 417K before putting it aside. I may continue at a later date. Either it takes far more than 417K trials to converge, or variance reduction is not as precise as we would like to think. When using the rollout statistics, this should be kept in mind.
  White is Player 2
score: 0 pip: 167  Unlimited Game Jacoby Beaver  pip: 167 score: 0
Blue is Player 1  
XGID=bECeEceB:0:0:1:64:0:0:3:0:10 
Blue to play 64 
1.  Rollout^{1}  8/2 6/2  eq: +0.0163 
 Player: Opponent:  49.80% (G:16.02% B:0.89%) 50.20% (G:14.40% B:0.66%)  Conf.: ±0.0090 (+0.0074...+0.0253)  [87.3%] Duration: 1 day 13 hours 01 minute 

2.  Rollout^{2}  24/18 13/9  eq: +0.0088 (0.0076) 
 Player: Opponent:  50.31% (G:13.82% B:0.67%) 49.69% (G:13.94% B:0.60%)  Conf.: ±0.0088 (+0.0000...+0.0176)  [11.6%] Duration: 2 days 00 hour 56 minutes 

3.  Rollout^{3}  24/14  eq: +0.0031 (0.0132) 
 Player: Opponent:  50.45% (G:12.30% B:0.61%) 49.55% (G:13.43% B:0.50%)  Conf.: ±0.0086 (0.0055...+0.0118)  [1.2%] Duration: 1 day 22 hours 09 minutes 


^{1} 417415 Games rolled. Dice Seed: 7552312 Moves and cube decisions: 3ply
^{2} 417413 Games rolled. Dice Seed: 7552312 Moves and cube decisions: 3ply
^{3} 417414 Games rolled. Dice Seed: 7552312 Moves and cube decisions: 3ply

eXtreme Gammon Version: 2.10
  White is Black
score: 0 pip: 167  Unlimited Game Jacoby Beaver  pip: 167 score: 0
Blue is White  
XGID=bECeEceB:0:0:1:64:0:0:3:0:10 
Blue to play 64 
1.  Rollout^{1}  8/2 6/2  eq: +0.0110 
 Player: Opponent:  49.74% (G:15.93% B:0.90%) 50.26% (G:14.42% B:0.67%)  Conf.: ±0.0023 (+0.0088...+0.0133)  [74.3%] Duration: 16 hours 40 minutes 

2.  Rollout^{1}  24/14  eq: +0.0094 (0.0016) 
 Player: Opponent:  50.56% (G:12.32% B:0.59%) 49.44% (G:13.39% B:0.49%)  Conf.: ±0.0022 (+0.0072...+0.0117)  [13.2%] Duration: 20 hours 13 minutes 

3.  Rollout^{1}  24/18 13/9  eq: +0.0094 (0.0017) 
 Player: Opponent:  50.35% (G:13.82% B:0.66%) 49.65% (G:13.92% B:0.61%)  Conf.: ±0.0023 (+0.0071...+0.0116)  [12.5%] Duration: 21 hours 19 minutes 


^{1} 62208 Games rolled with Variance Reduction. Dice Seed: 7552312 Moves and cube decisions: 3ply

eXtreme Gammon Version: 2.10