Why is Machinist DPS SOOOO BAD?

[Guulu]

Overload damage is not compiled for WF damage. It is not supposed to be used as a dps ability to be used whenever it's available. Nevertheless it's too weak, I agree.
Also, I believe that FT shouldn't be used under normal circumstances on a single target, except for going overheat if you're missing that 10 heat for your next wildfire and only if you're barrel stabilizer will be available after the barrel off penalty is removed.

Just tested on a dummy, and here is my battle log:

Guguulu L. uses Gauss Barrel.
Guguulu L. hits the striking dummy for 1204 damage.
Guguulu L. uses Cooldown.
 The striking dummy takes 2422 damage.
Guguulu L. uses Flamethrower.
 Guguulu L. gains the effect of Flamethrower.
Guguulu L. loses the effect of Flamethrower.
Guguulu L. hits the striking dummy for 1162 damage.
Guguulu L. uses Cooldown.
 Critical! The striking dummy takes 3519 damage

I used flame thrower during GCD and was able to get 1 tick, that is around 1k damage. But it seems that currently Battle log is still bugged. Interesting thing is, FT seems to reset CD of AA, makes me able to get 2 AA in 1 GCD. But FT is clunky and situational, you should never try this in fight if you don't feel right fit this between GCD or going overheat for this.

Edit: strikethrough added for incorrect information.