Stackable ASPD Pots...?

[mioka]

At first I used a Concentration Potion but when I changed to Awakening Potion, it just stacked. 
I tried testing with a berserk potion, and it just did the same thing; here are some stats:

My ASPD without the enhance pots is 180:
1) with concentration only it doesn't show any increase in the ASPD value.
2) with concentration and awakening, my ASPD increases to 183.
3) with concentration, awakening AND berserk, my ASPD is up to 184 D:

So my only question is it supposed to stack like that? Maybe it's a secret skill I never ever mastered/get to know of when I played last time.  I just wanted to reconfirm since someone told me it's supposed to stack >_>' (which I don't think it should be able to)

Thanks for the help (:

[rotiprata]

Try the reverse order. Berserk>Awakening>Concentration.

[Omni]

Did you see what your ASPD was with just Concentration/Awake/Beserk?

It's because each of the three increases your ASPD more.

Concentration will increase your ASPD the least. Awake adds more than concentration, so your ASPD goes up because Awake took affect; replacing the lesser Concentration effect. Then, Beserk adds the most out of all three, so when used it replaces the Awake increase, and goes up.

So basically:

If you use Concentration by itself, your ASPD will be 180.

If you use Awake by itself, your ASPD will be 183.

If you use just a Beserk by itself, your ASPD will be 184.

[mioka]

Ah, I get it now.  Can't believe I didn't realise that XD
Thanks for the help and clearing that up (;

[Omni]

No problem.