- May 14, 2023
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Hello guys!
Here's the story. I bought a GeForce RTX 4070 graphics card recently. In some games I'm experiencing specific shimmering/distortions with Ray Tracing enabled. These usually show on the border of lighting, in the place where direct lighting gradually disappears (don't know how to precisely describe it). Check out my video from Quake 2 RTX and you'll have an idea of what I'm talking about:
View: https://youtu.be/S04N0WCCYlQ
I experienced similar problems in other games on my previous GeForce RTX 2070 Super (Control for example). I was convinced that this is a side effect of Ray Tracing caused mainly by the fact that the GPUs still don't have enough power to trace the rays bounces enough number of times, but... My friend bought GeForce RTX 4070 (the same model) recently as well and he doesn't have a similar problem! I mean, there are some distortions from time to time, but not nearly as visible as in my case. He uses the same drivers, has a different motherboard and CPU, but I don't see a clear correlation between these two factors and shimmering I'm encountering.
In Cyberpunk 2077 Path Tracing mode the shimmering is almost non existent. It appears only in some rare cases like on the stairs. It's also barely present in Half-Life with RTX mod. I'm perfectly fine if this is a natural thing. But it wonders me why the problem is less noticeable on my friend's GPU. I also tried to change the game options. With anti-aliasing completely disabled it's even worse. The best result gives Temporal Upscaling AA, but it's still clearly visible. I also see in videos on YouTube that people rarely have this problem, at least in Quake 2 RTX.
I already tried different monitor and cables to exclude that this is an issue with any of these. It's not possible also due to the fact that without Ray Tracing there are no distortions. Do you have any idea what precisely might be the cause? Does someone who has RTX graphics card can confirm similar problems? I haven't tested my new GPU in Control, where the shimmering was sometimes very noticeable on my RTX 2070 Super, but I might do so...
I think that it could be some hardware-driver related thing. In theory these could be faulty Ray Tracing cores, but it doesn't explain why some Ray Tracing games don't have this issue or why is it only barely visible there. I'm pretty sure that to some extent it's a natural issue of Ray Tracing. Look at the Nvidia Remix video (1:33-1:48):
View: https://youtu.be/Vg52-HZhrFc?t=93
There's a similar effect visible when editing Morrowind assets in Nvidia Remix. The Ray Tracing shaders fill the scene with a delay. I think that the renderer needs time to trace all the light rays bounces and that's why there are distortions at first. And I'm fine with that. This doesn't explain however why I'm seeing these things notoriously in real time in Quake 2 RTX and my friend doesn't.
Any help or suggestions appreciated.
Here's the story. I bought a GeForce RTX 4070 graphics card recently. In some games I'm experiencing specific shimmering/distortions with Ray Tracing enabled. These usually show on the border of lighting, in the place where direct lighting gradually disappears (don't know how to precisely describe it). Check out my video from Quake 2 RTX and you'll have an idea of what I'm talking about:
I experienced similar problems in other games on my previous GeForce RTX 2070 Super (Control for example). I was convinced that this is a side effect of Ray Tracing caused mainly by the fact that the GPUs still don't have enough power to trace the rays bounces enough number of times, but... My friend bought GeForce RTX 4070 (the same model) recently as well and he doesn't have a similar problem! I mean, there are some distortions from time to time, but not nearly as visible as in my case. He uses the same drivers, has a different motherboard and CPU, but I don't see a clear correlation between these two factors and shimmering I'm encountering.
In Cyberpunk 2077 Path Tracing mode the shimmering is almost non existent. It appears only in some rare cases like on the stairs. It's also barely present in Half-Life with RTX mod. I'm perfectly fine if this is a natural thing. But it wonders me why the problem is less noticeable on my friend's GPU. I also tried to change the game options. With anti-aliasing completely disabled it's even worse. The best result gives Temporal Upscaling AA, but it's still clearly visible. I also see in videos on YouTube that people rarely have this problem, at least in Quake 2 RTX.
I already tried different monitor and cables to exclude that this is an issue with any of these. It's not possible also due to the fact that without Ray Tracing there are no distortions. Do you have any idea what precisely might be the cause? Does someone who has RTX graphics card can confirm similar problems? I haven't tested my new GPU in Control, where the shimmering was sometimes very noticeable on my RTX 2070 Super, but I might do so...
I think that it could be some hardware-driver related thing. In theory these could be faulty Ray Tracing cores, but it doesn't explain why some Ray Tracing games don't have this issue or why is it only barely visible there. I'm pretty sure that to some extent it's a natural issue of Ray Tracing. Look at the Nvidia Remix video (1:33-1:48):
There's a similar effect visible when editing Morrowind assets in Nvidia Remix. The Ray Tracing shaders fill the scene with a delay. I think that the renderer needs time to trace all the light rays bounces and that's why there are distortions at first. And I'm fine with that. This doesn't explain however why I'm seeing these things notoriously in real time in Quake 2 RTX and my friend doesn't.
Any help or suggestions appreciated.
Last edited:
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