I have the same issue with Corona 11, 3Ds Max 2024.2
Loading hangs up when "loading corona assets" at 100% for a few minutes.
Hi,
We already have a "long scene loading and viewport lag afterwards" fix internally, and it was related to Scatter.
To check if this is your case, you can:
• Try installing Corona 10 HF3 and opening the scene with it.
• Try saving the scene without scatter objects, then opening it.
If in any of the cases the scene loads faster, then we will be sure that it is already fixed.
This and other NaN related issues will probably make to a hotfix.