No, just a vraynomral with a bitmap
Try a smooth material with a bump map
The diffused works, it is the bump that gets wonky.
Are you saying that for you, those bits you posted render incorrectly when opened, literally as they are as you posted, so just those parts and nothing else?
If you have errors and nobody who has looked those parts has found issues, then maybe it’s something else.
I talked to the department manager awhile back and he said that they have spent numerous hours troubleshooting it and never found a solution - way before I arrived.

