Due to higher total refinement percentage achieved could contribute to unlocking Soul Mark in Tree of Wisdom Panel, it is advisable to utilize Over-refinement method in reducing the odd of low refinement percentage.
As per illustration below, for the same Level 1 refinement, committing different amount of Depleted Phlogiston (DP) will give different range of expected improvement.
2 DP = Improvement 2% ~ 4%
3 DP = Improvement 3% ~ 4%
6 DP = Improvement 4% ~ 4%
Unless there is a severe shortage of equipment strengthen material, it is better to commit more resource in one single time refinement to reduce odd of undesirable outcome.
