I'm writing to report a critical stability issue with the Razer Blade 16 (AMD Ryzen HX390 + NVIDIA RTX 5090) affecting professional workflows that rely on intensive GPU usage.
Issue Summary:
When running GPU-heavy applications such as DaVinci Resolve, Blender, or Unreal Engine, the system frequently:
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Freezes completely, requiring a forced shutdown.
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Becomes unresponsive during timeline playback or rendering.
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Shows no thermal or throttling warnings, and drivers are all up-to-date.
Root Cause (Confirmed by User Testing):
After extensive troubleshooting, I've confirmed that the issue is tied to NVIDIA Optimus (hybrid graphics switching).
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When Optimus is enabled (default BIOS setting), the system is unstable under GPU load.
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When I disable Optimus in BIOS (forcing dGPU-only mode), all crashes stop immediately, and the system runs reliably.
This indicates a conflict between the AMD iGPU and NVIDIA dGPU context switching, likely during high VRAM or GPU thread usage.
Request:
Would it be possible for Razer to:
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Investigate this Optimus-related instability with AMD + RTX 5090 specifically in GPU-heavy production software?
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Consider a BIOS or firmware update that improves Optimus handling, or provides:
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A more stable MUX switch implementation,
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Or a dynamic override mode for GPU-demanding applications.
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Coordinate with AMD and NVIDIA driver teams, if necessary, to improve hybrid GPU behavior on this model.
Why This Matters:
This issue significantly affects professionals using the Blade 16 for GPU-accelerated content creation. Without a fix, users are forced to run the laptop in dGPU-only mode, sacrificing battery life and heat management just to achieve stability.
I'm happy to provide logs, system specs, or reproduce the issue if needed.
Thank you for your attention and for continuing to support creators with powerful hardware like the Blade 16.
Best regards,