[Runtime Bug]: DirectX 9 DLFG related crash on startup

[itzslain]

Describe the bug

We have tried to run DirectX 9 game with remix-1.2.4 on multiple devices.
For some reason, it works on some of the devices, while on some devices it's impossible to run it (it just crashes on launch).

How do you reproduce the bug?

Crash occurs the same time application is being launched.

I attached 3 crash DMP's in case it can help.

What is the expected behavior?

The application can't launch on Laptop with RTX 4060. I think it should run on almost all RTX devices.

Version

remix-1.2.4

Logs

bridge64.log
remix-dxvk.log
bridge32.log

Crash dumps

NvRemixBridge.exe_20260113_125452.dmp
NvRemixBridge.exe_20260113_125807.dmp
NvRemixBridge.exe_20260113_125819.dmp

Media

bandicam_2025-12-31_02-57-19-495.-.Trim.mp4

[itzslain]

it's not DirectX 7, it's a DirectX 9. d3dim700 just left from old build. It affects nothing.

[MarkEHenderson]

Call stack indicates this is a divide by 0 error happening when creating the DLFG frame buffer.

[itzslain]

crash is happening with these specs:

13th Gen Intel(R) Core(TM) i5-13600KF
32.0 GB Memory
64-bit operating system, x64-based processor
Windows 11 Home - 24H2
NVIDIA GeForce RTX 4070 Ti

[itzslain]

rtx.dlfg.enable = false doesn't make game launch. It crashes with the new error code and trace

[itzslain]

RTX 30xx series videocards doesn't seem to crash. RTX 40xx series videocards are crashing.
Tested on 4 PC's

Laptop with RTX 4050 - crashing.
PC with RTX 4060 - crashing.
PC with RTX 4070Ti - crashing.
PC with RTX 3060 - no crash, everything works flawlessly.

[itzslain]

I attached a minimal testing application. Maybe it can help NVidia developers to debug the issue more efficiently

testapplication.zip

[KingVulpes]

RTX 30xx series videocards doesn't seem to crash. RTX 40xx series videocards are crashing. Tested on 4 PC's

Laptop with RTX 4050 - crashing. PC with RTX 4060 - crashing. PC with RTX 4070Ti - crashing. PC with RTX 3060 - no crash, everything works flawlessly.

I have confirmed that the issue also occurs on the RTX 50 series (Specifically test on a RTX 5060 Ti) meaning this issue occurs on all DLSS FG capable cards

[NV-LL]

Thanks for all the updates, @itzslain! We've filed REMIX-4966 for internal investigation.