twinmotion 2026 direct x 12 problem

Development Pipeline & Plugins
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1

Weird problem here. If TM is set to use direct x 12 then it will crash fairly quickly at random and every single time when saving (losing all of my work). The error message says it’s looking for files on my D drive. I don’t have a D drive. This is the message:

Fatal error: [File:D:\build\TM+20261\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Util.cpp] [Line: 1030]
Result failed
at D:\build\TM+20261\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Viewport.cpp:572
with error 80004004
Viewport=0x000001CEA35667C0, Num=3, Size=(3840,2054), PF=18, DXGIFormat=0x18, Fullscreen=0, AllowTearing=1

If I set TM to use direct x 11 then it works OK but the functionality of TM gets gutted.

Windows, bios, video driver, etc. are all up to date.

Lenovo Legion 9, 64 GB ram, nvidia 5090 video card.

Anybody have any ideas?

Thanks in advance

2

Have the same issue

3

Same problem here

4

Same problem here. nvidia RTX 5070 Laptop GPU

5

Problem solved. I had to do a clean install of latest NVIDIA graphic card drivers.

First I uninstalled the NVIDIA drivers with the Display Driver Uninstaller (DDU). I used https://www.wagnardsoft.com.

Second I installed the latest NVIDIA drivers. In my case 596.36.

6

Unfortunately, the problem persists. I use an external monitor (HDMI connection) with my laptop for work. The instability problem only occurs when Twinmotion is used on an external monitor. When the laptop monitor is the primary monitor and Twinmotion is opened on it, the application is stable!

7

I also tried without an external monitor (HDMI), and it started working