RhinoCycles not using RTX 5070 Ti (Desktop) — no GPU tabs appearing

Nick_Namazian · June 22, 2026, 4:14pm

Hi, I’m having an issue where Rhino Render (Cycles) only shows CPU in the device list and won’t use my GPU.

System:

Rhino 8 SR32 (8.32.26160.13001)
Windows 11
NVIDIA GeForce RTX 5070 Ti (Desktop, 16GB VRAM)
Driver: 610.62 (June 11 2026)
64GB RAM

What I’ve tried:

Updated to latest NVIDIA Studio Driver (610.62)
Set Rhino.exe to High Performance GPU in Windows Graphics Settings
Rhino’s System Information correctly identifies the 5070 Ti

What happens:
The Rhino Render device settings only shows a CPU tab — no CUDA or OptiX tabs appear at all. CPU usage hits 97% during renders while GPU sits at 2%.

I saw a similar report from a laptop 5070 Ti user (nilceros) where it was assigned to Lars. Is this the same issue affecting desktop cards? Is there a fix or workaround in progress?

surely there has to be right?

Thanks Guys!

Someone said try tagging @lars so here goes nothing

jesterking · June 22, 2026, 4:31pm

If you change the category of your post to Rendering and tag @lars you may get lucky

Nick_Namazian · June 22, 2026, 4:37pm

Thanks for the advice. I just edited the post…

Wish me luck…

jesterking · June 22, 2026, 4:54pm

I meant the category, not the tag (:

Nick_Namazian · June 22, 2026, 4:59pm

Did I do it right this time?

jesterking · June 22, 2026, 5:00pm

Better (:

lars · June 29, 2026, 11:46am

Hi @Nick_Namazian,

could you do the following please:

Send me a Rhino System Report
Close Rhino
Clean install of latest NVIDIA driver (choose Custom install and enable the Clean Install checkbox).
Delete the content of %APPDATA%\McNeel\Rhinoceros\8.0\Plug-ins\RhinoCycles (9bc28e9e-7a6c-4b8f-a0c6-3d05e02d1b97)\data and %APPDATA%\NVIDIA\ComputeCache

Do the CUDA and Optix tabs show up?

Thanks.
-Lars

Marlee_Flanigan · July 19, 2026, 7:58am

I am getting this same issue with not being able to ‘see’ the CUDA or Optix tabs using the latest version of NVIDIA (studio) driver on a Dell Inspiron 16 plus 7640. I have eveI disabled the Intel GPU, restarted Rhino and ran SystemInfo and the output doesn’t even identify a CUDA capable device. Were you able to fix your issue?

David53 · July 19, 2026, 8:02am

It would be helpful to see your SystemInfo, even if you cannot see anything obvious.

Nick_Namazian · September 14, 2026, 7:09am

Hi @lars

I’ve completed all 4 steps:

System Report attached below
Closed Rhino
Clean installed latest NVIDIA Studio Driver (616.92, September 4 2026)
Both folders were already empty (ComputeCache was cleared by the clean install, and the RhinoCycles data folder didn’t exist)

CUDA and OptiX tabs are still not showing — only CPU appears in the device list.

-– SYSTEM INFO —
Rhino 8 SR35 (8.35.26251.13001, 2026-09-08)
Windows 11
NVIDIA GeForce RTX 5070 Ti, 16GB, Driver 616.92 (9-4-2026)
Intel integrated graphics (no monitors attached)
64GB RAM

Rhino 8 SR35 2026-9-8 (Rhino 8, 8.35.26251.13001, Git hash:master @ 3645d710f50175d8ebcf404aded5b042a481c23e)
License type: Educational, build 2026-09-08
License details: Cloud Zoo

Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 63GB)
.NET 8.0.21

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 5070 Ti (NVidia) Memory: 16GB, Driver date: 9-4-2026 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 616.92

Accelerated graphics device with 4 adapter port(s)

Windows Main Display attached to adapter port #0
Secondary monitor attached to adapter port #1
Secondary monitor attached to adapter port #2

Secondary graphics devices.
Intel(R) Graphics (Intel) Memory: 37GB, Driver date: 10-18-2024 (M-D-Y).

Integrated graphics device with 4 adapter port(s)

There are no monitors attached to this device!

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 9-4-2026
Driver Version: 32.0.16.1692
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 16303 MB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.35.26251.13001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”

Thanks,
Nick

Nick_Namazian · September 14, 2026, 7:28am

No unfortunately not yet

jeremy5 · September 14, 2026, 9:15am

In Rhino 8 try running the hidden command _RhinoCyclesEnableGPU followed by restarting Rhino. Does that help?

If it works, you can do the same in the WIP if you use it.

HTH
Jeremy

Edit: But update the Intel graphics card driver from the Intel site first, they have been rolling out regular updates of late.

jesterking · September 14, 2026, 9:25am

IIRC if GPUs were disabled there would be a button in the rhino render options page to enable the GPUs:

github.com/mcneel/RhinoCycles

Settings/DeviceSection.cs

1714095c6


      
          			m_lb_use_cpu_in_multi = new Label
          			{
          				Text = Localization.LocalizeString("Enable CPU in Multi Device", 47)
          			};
          			m_cb_enablecpu_in_multi = new CheckBox
          			{
          				ToolTip = Localization.LocalizeString("When one or more GPU is selected allow also usage of CPU", 48)
          			};
          
          
          			m_lb_gpusdisabled_message = new Label
          			{
          				Text = Localization.LocalizeString("GPU detection is disabled. Press the 'Enable GPU detection' button and restart Rhino.", 72)
          			};
          			m_btn_enablegpus = new Button
          			{
          				Text = Localization.LocalizeString("Enable GPU detection", 73),
          				ToolTip = Localization.LocalizeString("Press to enable GPU detection, then restart Rhino", 74)
          			};
          			m_btn_recompilekernels = new Button
          			{

github.com/mcneel/RhinoCycles

Settings/DeviceSection.cs

1714095c6


      
          					{
          						m_lb_use_cpu_in_multi.Visible = m_currentDevice.IsGpu || m_currentDevice.IsMulti;
          						m_cb_enablecpu_in_multi.Visible = m_currentDevice.IsGpu || m_currentDevice.IsMulti;
          						m_cb_enablecpu_in_multi.Checked = m_currentDevice.MultiWithCpu;
          					} else {
          						m_lb_use_cpu_in_multi.Visible = false;
          						m_cb_enablecpu_in_multi.Visible = false;
          						m_cb_enablecpu_in_multi.Checked = false;
          
          					}
          					m_lb_gpusdisabled_message.Visible = Utilities.GpusDisabled && Utilities.HasGpus;
          					m_btn_enablegpus.Visible = Utilities.GpusDisabled && Utilities.HasGpus;
          					m_btn_recompilekernels.Visible = !Utilities.GpusDisabled && Utilities.HasGpus;
          					m_btn_showcompilelog.Visible = !Utilities.GpusDisabled && Utilities.HasGpus;
          					int utilPerc = (int)((float)e.AllSettings.Threads / Utilities.GetSystemProcessorCount() * 100.0f);
          					m_lb_threadcount_currentval.Text = $"(\u2248{utilPerc} %)";
          					RegisterControlEvents();
          					ResumeLayout();
          				}
          			});
          		}

Nick_Namazian · September 14, 2026, 12:12pm

Hi @jeremy5

That worked!!! Running _RhinoCyclesEnableGPU followed by restarting Rhino brought up the CUDA and OptiX tabs and my RTX 5070 Ti is now being used for rendering. GPU usage is up to 45% on a test model which is a massive improvement from the 2% I was getting before.

Thanks so much for the tip and solving the problem!

Nick

Nick_Namazian · September 14, 2026, 12:13pm

Hi Marlee,

@jeremy5 found a solution!

jeremy5 · September 14, 2026, 2:30pm

Hi Nathan,

No, no such button in 8 or 9, just the hidden commands to enable or disable.

Regards
Jeremy

jesterking · September 14, 2026, 3:43pm

Funky, those should show up when GPUs have been disabled. There is a disabled file in RhinoCycles settings folder somewhere that controls this.

lars · September 16, 2026, 4:40am

Thanks Jeremy and Nathan. 2 issues were filed:
RH-98700 and RH-98701.
-Lars

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RhinoCycles not using RTX 5070 Ti (Desktop) — no GPU tabs appearing

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