The Game crash in editor if i load my map

I make maps and my project is constantinople but a huge map very work the problem is that the game now crashes on this map because it is now 443kb and I think it is too big.
I don’t want to do it again it’s incredible I spent a lot of time I didn’t think I would be limited so there would be a way for a dev to increase the size accepted by the game or else a solution to reduce the size of the file.

Please any solution?

yes this is my scenario