Specs would help.

CPU, GPU, RAM, OS, resolution, game settings.

UE Error 01?
Had this happen all day. I read that changing "Global Illumination to low" would fix that and haven't had any issues since.

version: 11.0.9.251
Operating system: Microsoft Windows 11 Home, Version 10.0.26200
DirectX runtime version: DirectX 12
Driver: Game Ready Driver - 617.42 - Tue Oct 6, 2026
CPU: AMD Ryzen 7 9800X3D 8-Core Processor
RAM: 64.0 GB

Graphics card
GPU: NVIDIA GeForce RTX 5080
Direct3D feature level: 12_1
CUDA cores: 10752
Graphics clock: 2670 MHz
Resizable BAR: Yes
Memory data rate: 30.00 Gbps
Memory interface: 256-bit
Memory bandwidth: 960.064 GB/s
Total available graphics memory: 47819 MB
System video memory: N/A
Shared system memory: 31516 MB
Dedicated video memory: 16303 MB GDDR7
Video BIOS version: 98.03.3b.40.12
Device ID: 10DE 2C02 41961458
Part number: G147 0045
IRQ: Not used
Bus: PCI Express x16 Gen5

Same - too many threads with too many random fixes. From frame rates, to lighting, to driver rollbacks. to undervoltage... the list is endless. Not paying to troubleshoot this so refund was the clear choice.

Originally posted by Jonathan J. O'Neill:

Specs would help.

CPU, GPU, RAM, OS, resolution, game settings.

I think we are beyond specs at this point as there is a whole pinned thread in Announcements relating to PC Crashes and there is a wide variety of components being listed

Someone in another post said to add the following to launch options in Steam and that is what fixed it for me. Haven't had a crash since. Only on mission 15 though.

-DisableAsyncCompute -dpcvars="r.D3D12.AllowAsyncCompute=0"