Hi Kyle,
Welcome to the forum
Is there a way to turn that off and print the exact size at the original dpi?
It looks like you have the Override ppi box ticked and set to 300ppi.
See attached screen shot. To open Print Properties, hold you right mouse button down for a couple of seconds over the image thumbnail.
However, the "correct" answer to your question is to size pints the Qimage way and not the PS way
The QU way is to set the size in inches or mm in QU and never worry about the ppi; QU does all that for you. It's key feature is to take that data and send the image to the printer at the printer's Native Resolution: 720ppi for Epson , 600ppi for Canon etc. That way the driver does not mess with the image and
QU's superior World Class interpolation algorithm does the best job possible.
Never re-size (interpolate) an image in other application; any tagged ppi and size is only that, inches apply to a print not an image file.
By using the Qimage way, you will speed up your work flow as well as get top quality prints.
Terry
PS. Keep coming back to ask your questions, we are here to help and Mike, the program developer, is always available for stuff the rest of us cannot answer