With walls, it takes a very long time to compute heatmaps. Why?
A. The heatmap computation time is proportional to the number of APs and the number of walls. If you have 400 walls instead of 40 walls, computational time will be 10 times greater. Note: DRAW YOUR OWN WALLS and DO NOT use the auto-detection-of-walls feature that is available in the old Floor Plan Editor (FPE). The newer versions have Flash-based FPE, which is integrated within the WCS. This does not allow auto detection of walls, and you have to manually draw your walls. Try to keep the number of walls low. Fewer than 200-300 is optimal.