Disable Player Scaling?

Hello Joshua!

You can lock the player to the optimal size when using the Classic Player only. This is the default option. It locks the published course at its optimal size, the slide size plus additional width and height for the player frame. Even if learners resize their browsers, the course itself stays at its optimal size.

The player frame adds between 20 and 260 pixels to the width of your course and between 20 and 118 pixels to the height, depending on the player features you selected. 

Here's more information about calculating the dimensions of your published course.