Increase or decrease of CRS cut-offs has no direct relation with the early or delayed dates.
Agree, that the number of candidates with higher scores might increase if its delayed, but at the same time IELTS score of many people expire with delays (and they become ineligible to apply), age increases (lowering their score), they get married/divoced, etc, etc which will balance out the high scores.
Moreover, we've seen in the past that cut-offs have no fixed patterns (moves in both directions) and fluctuate greatly at times, so just be relaxed buddy !