Using the Normal Map Node (https://www.katsbits.com/codex/normal-map-node/) (https://www.katsbits.com/codex/normal-map-node/). Get to grips with the basics of Blenders Normal Map node. Normal maps can generally be used without modification or filtering but in doing so are prone to rendering artefacts and inaccuracies. To fix these the
Normal Map Node (https://www.katsbits.com/codex/normal-map-node/) can be used.