Why partial parts will be displayed after running a study of simulation?

Hi all,

Please check the picture and kindly solve the issue, possibly.

I ran the simulation analysis and found issues like,

1. Parts miss without existence but the transparent view remain on the screen

2. Some of the parts show 30%-80% (not exact all the times)

Is there any solution to overcome from this?

Thanks

Naga Ranjithkumar A