はじめに
Eevee's materials system uses the same node based approach as Cycles.
Nodes Support
Due to realtime constraints, not all Cycles features are available in Eevee. See Supported Nodes.
パフォーマンス
Performance is highly dependent on the number of BSDF nodes present in the node tree.
ちなみに
Prefer using the Principled BSDF instead of multiple BSDF nodes because Eevee is optimized for it.
参考