Can't set proper collision


I didn’t know what topic to put this under and the drop down didn’t have any suggestions that fit the subject.
I have a large building (600 feet long), that I can not get proper collision set for it. I have tried every type of collision at the highest settings and this is the best that it will do. I made the model in blender and using Unreal Engine 5. Did I do something wrong with exporting from Blender? Is the model too big? Is there another way to set proper collisions for something like this?

You could set ‘use complex as simple’ ( details panel ).

Hey, have you seen this video? might help. UE4 - Tutorial - Custom Collisions! (Request!) - YouTube
Basically for the best collision I’d go with custom made, like in the video. If you already have it, the previous comment will work.

That’s what I needed. Thanks for the help.