I think what you might need to do is set the camera to Tv mode and then set it to 1/80 (or faster) and then let the camera sort out the aperture and ISO for you to start with and that should sort out your blur problem. Might be a bit noisy but better to have a shot that is slightly noisy than not to have the shot at all (you can PP some of the noise out, but you cant PP blur out)
I found this when I was working in low-light settings and it made it for me.
I found this when I was working in low-light settings and it made it for me.