DataAxesGrid significantly affects rendering performance
Open the Qt gui and turn on "Show Annotation" (Settings dialog, RenderView panel, advanced properties). Do not load a dataset, but just interact with the render view. For me the "Frame rate (approx)" is around 400 fps or so.
Now turn on the "Axes Grid" under the representation properties, and then interact with the render view again. Now the "Frame rate (approx) has dropped to around 20 fps.