Can you send details about your test system (OS, Browser, GPU, C3 version, 3DObject version) and the errors you see in the console?
Viewing post in Construct 3 3DObject Plugin - SDK V1 only comments
Please try this: https://kindeyegames.itch.io/c3-3dobject-alpha/devlog/984083/fix-gpu-skinning-wo...
I think the lighting issues might require a fix in the 3D effects addon, so will start taking a look at that. This could be due to a recent C3 renderer change.