The problem with "Instant OFF GCD" abilities makes combat feel less rewarding.

[complexxL9]

oh, i misread, you were just talking about the animation cooldown...thought you meant the time from pressing potion to the time the potion took effect.

That also, a combination of both makes very frustrating experience. You see you need a potion, but can't use it until previous skill animation has ended, and when you use it - the effect applies after 0.5 delay. In total there is somewhat 1.8 sec delay if you are trying to use potion right after using some other skill.

Now imagine this in end-game raid where tank need to push his oshit button, 1.8 sec delay in a challenging content could mean the difference between a wipe and a kill. Not to mention this has very negative effect on combat experience overall.

[tuseroni]

i think the 0.5 second delay is not as much of an issue the monster still has to beat your timestamp from when you hit the button. even if you latency were higher (i assume you are on a server somewhere close to where you live) this would still be pretty constant. the animation delay is the more critical one (since the button cannot be pressed until the animation is done)