I have noticed when using Spell Booster on my lvl 76 I/L mage, there is a delay in character response for 1-2 seconds after casting it. For the 1-2 seconds, you can't move or attack, but you can teleport and pick up items. This only happens when Spell Booster is cast while standing on something. If cast while climbing a rope/ladder, there is no 1-2 second delay, and you can move/jump right away. Weird Ign: FrostedBork
it's like that in HS as well. dunno if it's on purpose but it's annoying as hell and i can't see what's the point to it.
i don't see how going to rope for one second is annoying as hell Oo, if it's a bug it will be looked into and get fixed usually op buffs have this delay; holy symbol, shadow partner,etc.
It's always been like this, and is like this in GMS as well. It's the same for shadow partner and HS. You just learn to work around it by playing that class.