To speed up high poly count reduction for 3D models, use specialized decimation tools (e.g., Blender’s Decimate Modifier, ZBrush’s Decimation Master) and pre-process by merging overlapping vertices or deleting hidden faces.
Pre-processing cuts redundant geometry, so tools handle less data—faster results while keeping the model’s essential shape.
Adjust tool settings (like limiting edge preservation to critical features) to balance speed and detail without unnecessary slowdowns.
For models over 1 million polygons, split into smaller parts first—this reduces the tool’s load and maintains detail where it matters most.