VRAM usage

[Andret3d]

Describe the bug
When importing a .ply file with Gaussian splatting into Unreal Engine 5 using the plugin, the file loads without textures, and GPU memory is quickly exhausted. The same .ply file works correctly in other viewers.

To Reproduce
Steps to reproduce the behavior:

Go to the plugin in Unreal Engine 5.5

Click on "Import".

Select a .ply file generated with Gaussian splatting.

See missing textures and memory issues.

Expected behavior
The .ply file should load with textures correctly and should not cause GPU memory to max out.

Screenshots
https://github.com/user-attachments/assets/07e0b2e0-07dd-47db-a968-fb1c904f6a17

Desktop (please complete the following information):

OS: Windows 10 and 11

GPU: rtx 3070 8gb and rtx 4060ti 16gb

Unreal Engine version: 5.5

Plugin version: v1.1.5.1)

Additional context
The .ply file displays correctly in other tools such as Jawset Postshot, including textures. Only Unreal Engine 5 with the plugin has this issue. Possibly related to the way the plugin handles splats or texture mapping. It also works well with Jawset Postshot inport plugin

[DominikLyda]

I don't know about memory usage but the texture is crashing becouse of ray tracing. For some reason in 5.5 it's on by default. You have to go to project settings and turn it off, after restart 3DGS should look as expected.

[Gleitfreude]

@DominikLyda is talking about hardware raytracing. You have to turn it of in your settings.
If you need hardware ray tracing, i think someone fixed it here

Vram usage.... yea that's whats brought me here. This is another topic. I guess for per like 5 millions of gaussians you need 8gb vram...