Odd Speakerbot Error

I am using speakerbot to read and speak all chat messages in my stream - I am terrible at noticing them and I do not have a large number of viewers so its not that offensive I hope.

However, randomly the TTS will echo and transmit on two audio channels while the rest of the time its only on 1. I have not been able to track down what is causing this problem. Anyone have an idea?