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Bump artifacts on high bumpmap strength
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System Information
Operating system: Win 7 Pro
Graphics card: GTX 1070 - Driver 419.67

Blender Version
Broken: blender-2.81-40a55be82cf5-windows64

Despite 100% Roughness it is Glossy in Bumpmaps.

Blenderartists Thread:

Example Blend:





Event Timeline

Philipp Oeser (lichtwerk) renamed this task from Glossy despite 100% Roughness in Eevee to Bump artifacts on high bumpmap strength.Oct 10 2019, 12:36 PM
Philipp Oeser (lichtwerk) lowered the priority of this task from Needs Triage by Developer to Confirmed, Medium.Oct 10 2019, 12:40 PM

Will confirm for now

This is because the reflected vector is below the surface normal. Cycles has a normal bump correcting term but EEVEE does not. So this is a limitation.