Extremely slow opening file

Hi everyone.

I have terrible problem with my scene. It took me more than 1hr just to open it. It has only 1200000 polygons. Also when I want to merge sth into the scene it took ages to merge it. Please if you have solution let me know. It became frustrating!

Thank you in advance.

Are you sure it has to do with Corona?

I’m not sure what went wrong. I was hoping that someone has similar situation and can help.

Have you tried merging this problematic scene into a new one?
Running some cleaner scripts?

Are you using “compress on save” option in 3dsmax preferences > files?