Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods What is the memory bar at the bottom-left?

Its the memory usage of the editor; I believe the limit is the amount of memory a 32-bit process can use on Windows.

It doesn't really tell much about your level, as the game will dynamically load/unload resources so it doesn't exceed that limit, so even with a level that eats a lot of RAM you should be fine (never tried it though).