To fix blurry displacement in 3D models, start by increasing your base mesh’s polycount—low polygon density prevents sharp displacement details from rendering clearly.
Use a higher-resolution displacement map (e.g., 4K instead of 1K) to retain fine texture details, and apply subdivision modifiers before displacement to add geometry for clearer results.
If blur persists, check the map’s bit depth (16-bit preserves smoother gradients) or reduce displacement strength if over-amplification is smearing details.