Rank 5 Load time

This has been happening since at least February of this year (googleing around showed someone else had this glitch/change as well). At rank 5, the load times DO decrease (on ice spear at least), but only partially ( # seconds). I think Thunder and Fireball have a decreased load time as well, but not fully. At R1, the load time doesn't seem to go down any farther sadly...making this potentially useful at r5+ skill quite a bit harder to use.

I'm wondering if this was changed at some point and not mentioned in an update, or if it's just a glitch that's been oversited since almost no one talks about it.