The method ‘GraphicsDevice.DrawInstancedPrimitives()’ is still missing but necessary for high performance.
Scenes with many (moving) objects are a big problem without hardware instancing.
If there is a workaround please tell us.
FYI There is an existing issue on GitHub about this:
For anyone who doesn’t follow Monogame’s Github page, an implementation of DrawInstancedPrimitives has just been merged into the develop branch.