Ardentmill Skills - Faster Decay Now?

Update #1:

Referencing this reddit post 2 years ago with KhorpionAkinobu&Hiogi- Reboot Solo Self Progression that received 5 points.

"Regarding decay: I've believe it's 1700 exp flat after 17 hours have elapsed, then an additional 100 exp/hr."

They have changed it since because I based my excel formula off of this. It is no longer applicable. I'm not really good at math, but I'm posting this up here in case any one can help solve this, since GMS is not transparent about it.

Tested twice Last week based on Khorpion's formula compared to how much actually decayed, I lost 1040 extra decay the first time I let it decay past 17 hours, and 400 more the second time. So I decided to switch his formula and test out an accelerated decay rate: where 17 hours no decay, then 400 per hour. Today I found out that after 42 hours, I am 9300 short of what actually decayed, so the decay rate is actually MUCH more accelerated than I thought.

I will keep you updated, in hopes that either anyone else or I figure out the new accelerated decay rate that GMS hid from us.

/r/Maplestory Thread