Scene lighting breaks when updating model

Hi,
we’ve encountered a problem we can’t solve.
When updating an imported model first the general lights disappear, then after a time it just turns into a greyscale shadow outline.
It’s hard to describe, so we’ve captured into on video, here is the link: D5 render erro - YouTube
What could be the issue and the solution?
Thanks in advance

Hi, friend,

Is your original model far away from the 0,0,0 point in your modeling software? If not, can you send your D5 and model files to us? we will help you to check it.

Here is the address: support@d5techs.com

Sorry for the inconvenience.