I think it’s totally bugged.
I recently started using it with Kira to try it out (I like katana and you can’t get that one+extra supplies), but everyone kept telling me that extra supplies+extra boom are the best augments for Kira.
Normaly my laser time is 40 sec, with extra supplies it should be 32 sec, instead it’s 50 sec, like wtf?
I also tried extra supplies on Skyhammer and I got 1 min and 20 secs.