To speed up texture painting for 3D models, start with low-resolution base textures and use preset or smart materials, then refine high-res details later—this balances speed with quality.
Use tools like Substance Painter or Blender’s preset libraries to cut manual blending time; they let you block in colors and values without lag.
For complex models, temporarily hide non-essential meshes—this speeds up real-time previews without losing progress.