>>43893372IVs exist and range from 1-50 instead of 0-31, making them even more important to breed for and having a wider variance in results so it already takes longer to breed.
On top of that, each tem has a “Fertility score” that goes down by 1 every time it’s bred, and when it reaches 0 it becomes infertile. Each child inherits its parents score. Meaning if you dont get a perfect tem, you can’t just start over from a breeding reject because they are actually WORSE for breeding, you have to go out and find a new one and try again from scratch.