I have a large DEM of England that I have clipped to my study area and have been trying to generate a hillshade from. I tried a few variations with the parameters in altitude and azimuth (leaving z =1), but I continue to get this really grainy result using ArcGIS Pro.
The cell size is 0.00027777 decimal degrees. and I tried to re-sample to 1 but got an error that the size was too large. I tried running calculate statistics and building the pyramids on the original DEM but the result hasn't changed any.