How to limit player movements inside a huge box?

Hello!

I am trying to make a map in Unreal Engine v5.3.2 like in World of Tanks. I don’t create yet one clone, just I like how they designed the world.

So I’ve create a landscape (2x2 km) where 1x1 km is a playable area and 0.5km is surrounded world to the player didn’t see map edges. Also I’ve added a blocking volume (box) to restrict the player inside that box. In my game the player is able to fly, including a flight due to explosion (e.g. a some bomb on the level).

The blocking volume with “hollow” and “use CCD” options works as I need until I don’t resize its brush to 1x1km size (100000x100000 unreal units). Then it magically stops to work and the player can fly out of the playable zone.

How can I fix it? Or maybe should I use another solution?

P.S. I am a noobie at Unreal Engine still.