NVIDIAGameWorks
[Runtime Bug]: RTX Remix: Volumetric fog disappears on camera movement, Dust Particles effect not working – Freedom Fighters (Steam)
Describe the bug
When launching the Police Station map in Freedom Fighters (Steam version) with RTX Remix enabled, the volumetric fog appears briefly upon loading but immediately disappears once the camera is moved. Additionally, the RTX Remix "Dust Particles" effect does not work at all — no particles are generated in the scene, regardless of lighting or environment.
These are Remix-specific effects and are expected to enhance the atmosphere, but they are currently broken or inactive.
How do you reproduce the bug?
Launch Freedom Fighters (Steam) with RTX Remix:
dxvk-remix-699474b-799-release
bridge-remix-5946ff6-132-release
Load the Police Station map.
Observe the volumetric fog present initially.
Move the camera — the fog disappears instantly.
Check for falling dust particles — none are rendered at any point.
What is the expected behavior?
RTX Remix should inject enhanced effects such as falling particles and volumetric fog into the game environment, based on the lighting and scene analysis. These features are advertised as part of the Remix runtime and should be visible by default unless explicitly disabled.
Version
DXVK Remix: dxvk-remix-699474b-799-release Bridge Remix: bridge-remix-5946ff6-132-release
Logs
bridge64.log remix-dxvk.log bridge32.log
Crash dumps
No response
Media
No response
Hey @Entityexist - thanks for reaching out! Will you please send us a video of what you're seeing? Thanks!
Hi @Entityexist - checking in again to see if you can provide a video of this issue. Seeing it will help us understand what might be happening here. Thanks!
This is the moment https://youtu.be/N0TZrPexEm8?t=196
Problem Happens when selecting "In View Transform" which is more stable mode
Based on the video it seems the dust particles are indeed present whereas the initial post in this issue said they weren't. Is the issue now more that the particles aren't moving when you rotate the camera?
I managed to fix (or at least work around) the problem in a strange way.
In "Fused World-View Mode" I set it to "None". At this point, I still had an issue where alpha-textured objects were detaching/weirdly shifting when moving the camera.
So I went to Dev Settings > Camera > Advanced and enabled "Skip Objects Rendered with Unknown Camera" — this made the entire world disappear, leaving only the characters visible.
Then I did something that might seem like an odd step: I went to Game Setup > Parameter Tuning > Sky Tuning > Advanced and enabled "Reproject Sky to Main Camera".
After that, I started marking all textures rendered in 3D space — basically flagging all hashes — which resulted in all textures and objects appearing properly on screen.
The best part: after doing all this, volumetric effects worked, Dust Particles worked, and even Anti-Culling, which previously didn’t work, started working.
Unfortunately, the world would still randomly appear and disappear, and the game became very unstable with low FPS.
It seems like this game is reading the camera position incorrectly. If I’m right, RTX Remix is technically rendering the scene using "Unknown Camera", which causes the rendering issues. By marking all hashes, I effectively forced the entire game to render through the Main Camera.
TL;DR: I worked around the issue by forcing all objects/textures to render through Main Camera instead of Unknown Camera. Steps:
Set Fused World-View Mode to None.
Enable Skip Objects Rendered with Unknown Camera (world disappears).
Enable Reproject Sky to Main Camera.
Mark all 3D textures/hashes so they render to Main Camera.
Result: Volumetric fog, Dust Particles, and Anti-Culling started working, but the game became unstable with low FPS and the world still flickers in/out. I suspect the game incorrectly reports camera position to RTX Remix.
After more testing, here are my observations:
Setting Fused World-View Mode to None + forcing all hashes to Main Camera makes volumetric fog, Dust Particles, and Anti-Culling work.
However, this causes instability (low FPS, world flickering).
Objects marked as UI will make the entire world disappear.
It seems the game sometimes renders via Unknown Camera, which may be causing these issues.