After exporting my dgn file into LumenRT, the *.lrt file is flickering. Also the animation is not fluent.
When you see the flickering/”parkinsons” issue in LumenRT, 99.99999% of the time it’s due to the fact that there is some stray geometry very far away from the model.
To confirm it, please press on "fit view", you can see this situation:
There is some geometry very far from the main model causing the view to appear blank. To fix this, shut levels off and do a fit until you find the offending level/geometry, or alternatively you can delete the geometry.
With these levels turned off/geometry deleted, the model comes across just fine.