I just had an idea about this and even if it’s tedious to do, it could be abused in some way.
If you have an attribute on an overcharge skill that increases the CD of a skill but increases the DPS or whatever and you turned it off before you used the last charge on your skill, would the skill still have the +CD timer or would it have the normal CD timer with the attribute turned off?
ie. Fire Ball + Burning Debuff, Heal + Self Heal attribute, Multi Shot + Critical Chance, etc.
I would assume that the cooldown will be the one with the attribute turned off. Overheat cooldown and actual cooldown are different after all.
Nice suggestion but it will never happen 
It wasn’t a suggestion but a question about if it is a bug or not 
The thing with the Overload CD’s is very weird since you have to use all the charges on the skills before the skill actually starts its stated CD. Otherwise you have to wait a longer time to get the charge back.
In this case, some attributes increase the CD timer because it increases utility or DPS. What I was asking for was if it changed the final CD if you used the first charge with the attribute on and then turned off the attribute and used the skills last charge.
Well i think it will be one with attributed turned off 
but it maybe annoyed to toggle the attribute many times.
Or you can ask this guy Overheat System