I tested by creating a new, completely empty project. As I suspected that Unrealās own water bodies system could be causing the crash, I set up a new project with the following steps:
1 - I created a project with the GAMES" > āBlankā template.
2 - I created a level empty.
3 - I enabled the plugins: Water, Chaos Vahicles and Day Sequence.
4 - I added to the empty level: the lendscape (default size), the ocean water body and the Day sequence.
5 - I enabled Mega Lights and Shadows Ray Tracing.
6 - I placed only one point light in the scene.
7 - I started play, and at the same time the crash occurred:
LoginId:9a6bbc12425d311aaffc8190d4d9bf76.
EpicAccountId:2b3f513183a14cff82d9d68cd6941c47
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000008
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll
I repeated this entire procedure using bodies of water from rivers and lakes, and the same crash also occurred with just one point light in the scene.
So, I believe that the body of water ocean, rivers and lakes could be responsible for this crash, because without a body of water the MegaLight works perfectly.
I would like the Unreal community to redo these tests and confirm the suspicion that the water bodies system is causing these crashes, reporting this problem to Unreal Engine. My intention is to contribute to the growth and improvement of the Unreal graphics engine, which is incredible.