Just wanted to put this here for anyone who had some headaches with this and all the other versions of stable diffusion.
If you specify the output file, you need to add the extension as well. So "outputs/sample.png" If you don't add the extension it will fully generate your image, then fail at the end with no clear solution.
I'm running a Ryzen 5 3600 and getting ~4.48t/s with 16GB of fairly cheap ram, so it could get even better
Just wanted to put this here for anyone who had some headaches with this and all the other versions of stable diffusion.