
Originally Posted by
Kirschy
1% does not equal 1 second of recast. If you have a 30s recast and you add 1% haste, you're removing 30s * 1% = .3 seconds, leaving you with a 29.7s recast. This rounds down to 29 seconds. (Which is the point drwaffles was trying to make. If recast was rounded up, it would still be 30s.)
In that case adding 1% haste resulted in going from 30s->29s. Adding another 1% gives you 2% total. 30s*2% = .6 seconds off, leaving you with 29.3s recast. This still rounds down to 29 seconds. In the first example 1% resulted in a 1 second decrease, and in this example, an extra 1% leaves the recast unchanged. Depending on the initial recast of the spell being used, 1% could be the difference between having that extra second or two decreased from your recast.
The point Thorny is making is that not many have a different haste setups for various spells. Haste and Refresh spells have different recast timers, but there's no reason to not use one optimal recast option for both, esp if you are using spellcast.