Frenzy not giving 30% haste

[25toten 1]

Correct me if I'm wrong, but isn't 30% of 2.00 speed, .60?

2.00 x .70 = 1.40

But the tooltip says 1.54, which is 23%.

 

Anyone else notice this?

 

https://postimg.org/image/7pjfucfnz/

[Knife 2]

2/1.3 =1.5384615

with your math a 100% attack speed buff would produce infinite dps since the swing timer would be 0

[Drakbak 3]

Knife is correct.  The calculation is Base Speed / (1 + Haste%).  So in your case, it's 2.00 / (1 + 30%) = 2 / 1.3 = 1.5384615.   Think of it more in terms of "I'm going 30% faster than usual, so I'm going 130% of normal".   A 100% haste bonus would be 2.00 / (1 + 100%) = 2 / 2 = 1.00 Speed, which is double your original speed.

The same calculation works with your weapon speed with the quiver haste bonus.  So if you have a 3.00 speed weapon and 15% quiver, it's 3.00 / 1.15 = 2.6087.  Now if we take it one step further, let's apply Rapid Fire so you have a 2nd haste effect alongside the quiver.  You combine these effects by multiplying them together like this:  1.15 * 1.40 = 1.61 total haste effect.  So 3.00 / 1.61 = 1.863 weapon speed.