READ THIS IF IT CRASHES
The game may crash with LowLevelFatalError or pure virtual function errors, especially during mandatory battles. I think the problem is poor memory management and heavy graphics load for some GPUs. I used chatgpt for help and I found this fix:
1. Lower graphics quality manually
Open GameUserSettings.ini in:C:\Users\[YourUsername]\AppData\Local\PokemonEmerald\Saved\Config\Windows
Edit the file and set:
ResolutionSizeX=1280 (or yours)
ResolutionSizeY=720 (or yours)
FullscreenMode=1
sg.ResolutionQuality=70.000000
sg.ViewDistanceQuality=1
sg.AntiAliasingQuality=1
sg.ShadowQuality=1
sg.PostProcessQuality=1
sg.TextureQuality=1
sg.EffectsQuality=1
sg.FoliageQuality=1
bUseVSync=False
Set the file to Read-only
Right-click → Properties → Tick Read-only.
This helps, but doesn’t fully stop the game from forcing settings.
Turn off background GPU-heavy apps
Pause Wallpaper Engine, Discord Overlay, Steam Overlay, etc.
4. Avoid opening the Pokémon stats window during battles
It can bug the UI and freeze the screen.
5. If you still crash
Delete your save file (Slot1.sav) and start fresh.
Hope this helps