Help using UE4.27 with DirectX 12

Development Character & Animation
1

Hello everyone, I am facing problems using Path Tracing in UE4.27.
After I render some frames sequencer, closing the Editor gives this crash:

LoginId:02b5b0414e51dad09cab08bf6df59736
EpicAccountId:20f7eba8ba6c405d995c564a0f2e5875

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION 0x0000020d9f821460

D3D12Core
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_D3D12RHI
UE4Editor_RHI
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Device:
Processor AMD Ryzen Threadripper PRO 3975WX 32-Cores 3.50 GHz
Installed RAM 64.0 GB (63.8 GB usable)
System type 64-bit operating system, x64-based processor
Windows 10 Pro
Nvidia Geforce RTX 2080 SUPER

I have tried the following:

  1. Changed the NVIDIA driver version, tested with Standard (462.59, 471.68, 472.12, 472.39, 472.47), with or without Geforce Experience, also tried with DCH driver version (don’t know what DCH means) v.497.09 without Geforce Experience.
  2. Added Timeout Detection & Recovery (TDR) in Registry Editor to 60
  3. I have downloaded mpo_disable.reg from NVIDIA Website

None of the steps above helped.
I was working with Path Tracing and it was fine using my previous Intel computer.

Please help!

2

For anyone having this issue. I found the fix working for me:
On my Windows desktop, Right-Click, Display Settings, Graphics Settings, Choose an app to set preferences, Browse, select UE4Editor.exe (mine is at C:\Program Files\Epic Games\UE_4.27\Engine\Binaries\Win64) then select Power saving.
This works for me and I hope it will work for everyone.

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