When using data at the global level in ArcGIS Pro, which projection should I use? By default the data frame and global elevation data appear to be WGS 1984 Web Mercator Auxiliary Sphere. If my data layers are GCS WGS 1984, is the software doing more work to display them than if I converted all the data to WGS 1984 Web Mercator Auxiliary Sphere? If I switched the data frame to use GCS WGS 1984 (same as my data layers), would the software then have to on the fly reproject the internal elevation data?
