After you have estimated and analyzed a simulated calculation, you can make changes in the outline to improve performance.
From top to bottom in the outline, order sparse dimensions to create the fewest percentage increases in upper blocks:
Upper level blocks after consolidating only sparse dimension 1: 1,000,000
Upper level blocks after consolidating only sparse dimension 2: 3,000,000
Upper level blocks after consolidating only sparse dimension 3: 10,000,000
Upper level blocks after consolidating only sparse dimension 4: 300,000
Upper level blocks after consolidating only sparse dimension 5: 5,700,000
Use the simulated calculation to generate the upper block count. These numbers may be accurate despite actual dimension sizes as noted next to the items above.