Bot, for me, seems pretty fast a human-like.
One thing I can suggest is that, instead of "clicking" to make all potions in the chatbox, the bot should press space. This could save an extra 5 seconds each bank.
I used this bot to make Prayer Potions and everything was smooth, making 1820 pots per hour.
Be wary of reviews that state to "use another herblore bot", they could be fake, and by the competing script writers to encourage players to use their script instead of this one. It might sound like a conspiracy theory, but it happens on yelp with restaurants. Wouldn't surprise me if it occasionally happens here, too.