Choose the Right Chart Type
Surface charts are ideal for visualizing data with variable elevations and regularly spaced X/Z coordinates. If the data does not meet these criteria you can consider using the Mesh or Triangulated surface charts.
Use Appropriate Lighting
Lighting can significantly impact the appearance of Surface charts. Use lighting that highlights the important aspects of the data, such as areas of high or low value that don't obscure any important details.
Simplify the Data
Grid Surface charts can contain millions of data points, and rendering such a large number of data points, especially interactively is very computationally expensive. You can use various methods to simplify the rendered data set like binning or clustering, which are built into the chart.
Use Appropriate Labeling
Labeling ensures the viewer understands the presented data. Label the axes and provide a legend explaining the meaning of any color schemes used in the chart.