Acid Runner Cade Melt

Why is the acid runner’s time to acid the cades so short, especially given that they have strong acid which can single handedly break a cade in ~10 seconds? (5 if the runner slashes it too)

What do you guys think about this? Should it be increased to the same amount of time as other castes, given that it’s strong acid? Or should it be reduced to regular acid? Or is it balanced? (breaks the cade before blowtorch can complete repair process)