Tiled Landscape Load Tile Crash

I’ll make it short.

I have a large map, (665 tiles, 505 resolution, 34x34 exported from World machine.)

Loading tiles works fine until I reach any tile with Y over 30.
tile_x20_y29 = loads perfectly fine.
tile_x31_y30 = loads perfectly fine.
anyTile_xAnything_y31 = unreal crashes and gives me this error

I can open every single tiles except those with y31 / y32 / y33 / y34.
I can have hundreds of tiles open and it works fine, but even loading a single tile with y30+, it instantly crashes to this. I have 0 idea why loading even only one tile does this.

I’ve tried reexporting from WM these tiles, I can open these tiles as their own levels and it works fine. I’m at a complete loss.