When i open the model in UE410.2,Why the UE4 was unresponsive

Please,I need help.
And i also want to thanks the person who helped me

You need to provide more information about your issue

I assume you’re experiencing the editor freeze whilst importing a model? That’s what I gather, at least. Could you provide some further information pertaining to the mesh? Poly count, for example?

I just get unresponsive when i want to view the model i imported