CPhil, thanks for posting that nice image of Graphing Calculator 3D.
Curious, you mentioned that it took a few seconds to plot that graph. But plotting that graph should take less than a second. I wonder if high-precision was enabled by mistake. It should have been off by default as most calculations do not require that kind of precision. You can check that by clicking on View > Precision menu. In there, Math Library should be set to "Double (Fast)". Hope this helps :)
