Hey, we do not offer support for the mods and the modded games. Do you experience the issue on a new campaign after manually deleting all the mod files and verifying the integrity of the game files? If so, please let me know.
Yeah I understand you won't support mods. I'm just pointing out that this maybe a game engine related bug, as the program CTD with no stack traces even in tools like DnSpy. The usage case I've produced is more like a boundary test-condition of the engine.
I noticed that the same large scene.xscene opened fine in the modding toolkit, but CTD in-game, so something is going on.
This problem did not exist prior to 1.7, so I suspect it has to do with how scene capsules are handled.
So essentially something happened between 1.6.3 and 1.7 that has lowered the upper-limit of scene entities in-game. Maybe it's a design trade-off, maybe it's accidental, just wondering if the internal dev team is aware of this.