hi @Lew15_720 ,
The UEFN needs at least 64GB of virtual memory. (64000) 128GB (128000)
The maximum is 512GB, but you only need this if using 8K textures.
How to manually add 64GB virtual memory
This pagefile MUST be on a fast SDRAM, possibly a spare SD Drive.
The thing that has caused crashes is using DirectX 12.
In projects, start UEFN -DX11 on the command line or select DirectX 11 in the project settings.
Run DXDIAG from the Windows Search box and select Display.
A long time ago, this list of possible problems for Unreal Engine 5 was created, on which UEFN is based.
Most of the time, the bug check is caused by a graphics driver that needs updating, as Epic Support reported.
RESOLVED: Known issues with NVIDIA 576.02 drivers on RTX 50-series GPUs | Epic Developer Community