Nintendo Switch DST local 2-player split-screen world crashes during loading after late-game progress

I am experiencing a recurring crash issue in Don't Starve Together on Nintendo Switch when playing local 2-player split-screen.

The problem happens when loading an existing world in local co-op. In single-player, the world can usually be loaded successfully, but when trying to enter the same world in 2-player split-screen, the game often closes during the loading process before entering the world.

This issue becomes much more common in late-game / long-progress worlds.

Current symptoms:
- Player 1 can usually enter the world alone.
- The same world may fail to load and crash when starting in local 2-player split-screen.
- The software closes during loading before both players enter the world.
- This has happened repeatedly across different attempts.

What I have already tried:
1. Reinstalling the game
2. Restarting the console
3. Testing with internet connected / disconnected
4. Testing with wired internet / Wi-Fi / offline
5. Turning off auto-login based on old discussions
6. Testing on a different console, including Switch 2

None of the above fully solved the problem.

Current workaround:
The only partial workaround we found is:
- Launch the world with Player 1 alone first
- Let the world load successfully
- Exit and restart the game
- Then start the world again in 2-player mode

This sometimes improves the success rate, but it is not reliable.

Additional information:
- Platform: Nintendo Switch / also tested on Switch 2
- Mode: Local 2-player split-screen on the same console
- This issue does not appear to be caused by internet connection status
- The world is often accessible in single-player, but not reliably in 2-player split-screen
- The issue seems more likely to happen in older / late-game worlds