Searching for "free" .LME files is common because achieving a "photorealistic" look in Lumion can be difficult for beginners. The Pros (Why people look for them): Instant Professionalism:
High-end .LME files often turn on "Ray Tracing" or heavy "Global Illumination." If you don't have a powerful GPU (RTX 3060 or higher), these "free" presets might just crash your computer. Verdict: Is it worth it? Use Caution.
.LME files are usually not backward compatible. An effect stack from Lumion 12 will likely not work in Lumion 10. The "Scam" Factor:
You can apply a "Realistic Interior" or "Night Mood" preset created by a pro and instantly improve your render. Learning Tool: