In the utility click the correct icon on the character's Gear Buff Macros page, and then click Show definitions. In the Cast Time column change the number to 30.000 then press [Enter]. Click Autosave. This will change the value without breaking anything, but the utility won't like it. You may get an error box while configuring other settings for this character. If so, click Continue and make sure the cast time change is the last thing you do before clicking Autosave.