Summary
Lumen not working correctly in version 2025.2
Please select what you are reporting on:
Creative
What Type of Bug are you experiencing?
Other
Steps to Reproduce
- Open the same project in Twinmotion 2025.1.1 and Twinmotion 2025.2.
- Use identical Environment, Camera, and Render settings.
- Set all quality options to Ultra.
- Enable Lumen with Ray Lighting Mode set to “Full.”
- Compare the lighting and shadows in both versions.
Expected Result
Lighting should look consistent, natural, and realistic as in version 2025.1.1.
Observed Result
In version 2025.2, the lighting becomes unnatural, bluish, and flat, as if Lumen is not functioning properly.
Platform(s)
Windows 11 Home Single Language
CPU: AMD Ryzen 7 5800H (8 cores)
GPU: NVIDIA GeForce GTX 1650 (4 GB)
RAM: 16 GB Dual Channel
Driver: NVIDIA Studio (version 581.57 - launched in: Tue Oct 14, 2025)
Island Code
N/A
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Additional Notes
Both versions use the same Environment, Camera, and Render configuration.
The issue appears only after updating to Twinmotion 2025.2.