Why not reduce contribution to help solve moonstone problems?

[Kerororo]

since servers merged, ssp has been so crowd than ever, many ppl won't get quest rewards or the ssp reward box which contained a special key to open moonstone box, ofc game badly optimised as well, resulted in lag/freeze low dps output, this remind me one thing, I was once played on Japanese server, that was few years ago, when moonwater updated, many ppl won't get reward for upgrade profane weapon, exactly the same problem as moonstone, what the JP Ncsoft did was reduced the contributing requirement for field boss, which mean the required dps for players get reward box has been reduced, something like from 10% boss hp down to 5%, not sure how it mechanical working, however tt worked out very well. Just look at West Ncsoft, hopeless.