Hi I bought an upgrade to cut my intellectual learning skills speed by 20%. Before I bought it my Teleportation 5 was 15 days long and after I bought the card its 14 days long. Shouldn't 20% be more of a cut?
If you bought the 20% card that means that you already had the 15% card. The cards don't stack, so you only got a 5% increase. 5% of 15 days is 0.75 days or about 18 hours.
By the way, I was considering purchasing Industrial Learning V because I still need a lot of the furniture skills, but even though my total learning time is almost 45 days, all I would save is like 2-3 days on learning. Not worth the 20,000 iMG points in my opinion.