It looks to me as though you have some spring sickness, especially in photo 2, which would account for shorter growth. Fans with spring sickness are stunted to varying degrees depending on the severity. They can recover and even flower, but some take longer to get going and a minority don't make it.
FWIW you also have leafminer but perhaps you already knew that.
By the way, daylilies have rhizomes (underground stems) and not stolons (above ground).
