Ah! This is exactly my problem in exporting to Nira, too!
I’m creating a virtual art gallery for a client, and the room “has to be exactly this.” Okie doke, but the walls are bare and white, and there are 4 10ft tall, arched windows on the side facing southeast, so….
It’s been a nightmare project;, because of clean white walls, but I finally got it looking good in RC, only to have it lose the sharp edges when exporting and viewing.
If anyone could point me to a tutorial to replace the walls with low-poly imitations, that would be awesome.