Periodic Frametime Stutter When Secondary Intel Arc GPU Is Enabled Due To AMD KMD

[CreepingDeath07]

System Specs:

Motherboard: MSI MAG X870E TOMAHAWK WIFI
OS: Microsoft Windows 11 Pro 64 bit Ver.2009 (OS build 26200.7840)
BIOS Version: 2.A91
BIOS Release Date: 09/09/2025
CPU: AMD Ryzen 7 9800X3D
Memory: 64 GB @ 2x 32 GB DDR5-6000, Kingston KF560C36-32 ( i also tried at jedec speeds -4800- , issue was still present)
Primary GPU: AMD Radeon RX 9070 XT(Sapphire Radeon 9070 XT Nitro+)
Secondary GPU: Intel(R) Arc(TM) B580 Graphics(Intel Arc B580 Limited Edition)
Drive: SSD, Samsung SSD 990 PRO 4TB
Powersupply: Corsair HX1500i

Issue Description

When the Intel Arc B580 is enabled in Device Manager (even if no application is using it), periodic frametime spikes occur in games.

The stutter:

• Happens in games(not only in games but sometimes after closing the game keeps stuttering on desktop)
• Occurs at consistent ~20 second intervals
• Continues indefinitely once it starts
• FPS remains stable
• Frametime graph shows sharp periodic spikes
• Completely disappears when the Intel GPU is disabled in Device Manager

The issue occurs even when:

• No encoding/decoding workloads are active on Intel
• The Intel GPU shows 0% usage

Reproduction Steps

1. Enable Intel Arc B580 in Device Manager
2. Launch any GPU-bound game (running on AMD GPU)
3. Observe frametime graph
4. Every ~20 seconds, a visible frametime spike occurs

Disable the Intel GPU → issue disappears immediately.

I tried to gather some info using latencymon;

Latencymon findings:

Highest DPC routine execution time:
219872 µs
Driver responsible:
amdkmdag.sys (AMD Radeon Kernel Mode Driver)

Extra info:

AMD RX 9070 XT running on x16 (gpu-z confirmed)
Also i want to mention that i used b580 as primary gpu for two months in the same exact PCIe slot(secondary) and never had stutter issues

latencymon.txt

[amarsden-amd]

Hi @CreepingDeath07,

What game were you running when you encountered this stutter? Was it running DirectX or Vulkan? Thanks

[CreepingDeath07]

@amarsden-amd Generally every game. Rise of the Tomb Raider, Shadow of the Tomb Raider, Tomb Raider GOTY Edition, Disco Elysium, GTA V Enhanced Edition, Burnout Paradise Ultimate Box(not remastered original game, game is 60 fps btw). GTA V Enhanced Edition is one of the fastest games to reproduce the problem, almost every time i was able to reproduce the problem within 2 minutes of game play.

[amarsden-amd]

Hi @CreepingDeath07,
Would you be able to capture this issue using Intel's PresentMon (found here: https://game.intel.com/us/intel-presentmon/)? Running the app while your game is running:

• Select your app in the process dropdown
• Select the GPU Focus preset
• Enable the Capture duration, set it to 60 seconds
• In game, hit the Capture hotkey lited in PresentMon to take a capture
  And then attach the generated csv file?

We'd also appreciate if you could get an ETL trace file for us. You can do so with the following instructions:

• Get UIforETW from here: https://github.com/randomascii/UIforETW/releases/tag/v1.60
• Ensure Fast Sampling, GPU tracing, and Tracing to file are all enabled
• Run the game and get to a point where it’s stuttering
• Click “Start Tracing” in UIforETW and return to the game
• After about 60 seconds, click "Save Trace Buffers" in UIforETW
• Send me the trace file

Does this problem only occur on a specific resolution?
How many monitors do you have? Are they plugged into the AMD card when the stuttering occurs?

Thanks!

[CreepingDeath07]

@amarsden-amd
Here are the requested files from both presentmon and UIforETW https://drive.google.com/drive/folders/1350WLMTd59tetEo_QbxrU6lDysrt2lRy?usp=sharing

• Problem is not tied to a specific resolution. I also tried 1080p and was able to reproduce the issue. My native resolution is 3440x1440. And it occurs with my native resolution as well.

• I have only one monitor. It is LS34BG850SUXUF if that matters.

• Yes my monitor is plugged to my AMD card via display port.

[amarsden-amd]

Thanks for these traces! Do you have HWS enabled? Whatever your setting, could you try toggling and retrying?

[CreepingDeath07]

@amarsden-amd It was set to on by default. Turned it off. It still stutters.

[Leopard1907]

Sorry for chiming in.

@amarsden-amd Just out of curiosity, do you try with a system that has AMD gpu+ Arc gpu on your end or are you just throwing ideas around as a hail mary? Because that suggestion is the most r/pcmasterrace thing i've ever heard.

[wzhaoyahoo]

@CreepingDeath07,

"Also i want to mention that i used b580 as primary gpu for two months in the same exact PCIe slot(secondary) and never had stutter issues"

Does that mean AMD GPU is used as secondary GPU and you play the game with b580 no issue is observed?

[wzhaoyahoo]

@CreepingDeath07, can you try below?

Disable every Intel application that might use ARC GPU:

• Intel Arc Control (may be in system tray), or use Task manager to check.
• Also check the windows Servies and see if any service related to Intel, stop that service, e.g. Intel(R) Arc(TM) Control Assist

Then play the game again and let us know the result.

[CreepingDeath07]

@wzhaoyahoo It doesn't stutter when i use B580 for gaming and RX 9070 XT is idling.

@CreepingDeath07, can you try below?

Disable every Intel application that might use ARC GPU:

Intel Arc Control (may be in system tray), or use Task manager to check.
Also check the windows Servies and see if any service related to Intel, stop that service, e.g. Intel(R) Arc(TM) Control Assist

Then play the game again and let us know the result.

Only solution is disabling B580 in device manager only then RX 9070 XT wont stutter in games.