PNY OC 5080 Very odd issue

[mongoosemango]

RTX 5080 Crash Investigation Summary

 RTX 5080 crashes during gaming (especially Stalker 2) with Event ID 41 and 0x00000133 (DPC_WATCHDOG_VIOLATION) errors, causing black screens and system reboots during extended gaming sessions.

 

Ryzen 9 9950x3d

G.SKILL Trident Z5 Royal Neo Series (AMD Expo) DDR5 RAM 64GB (2X 32GB) 6000MT/s

Running at 5600mhz now.

Running A asrock taichi 1300W PSU

Switch rammed out put in one stick of another brand same issue 

on the newest bios update

1. Power Issues (RULED OUT) - Tested triple 8-pin cables, also tried 600w single cable confirmed 356W power delivery is stable in FurMark
2. PCIe Settings - Set all PCIe slots to Gen4, unified PCIe configuration, disabled Fast Boot/ERP
3. Memory Stability - Reduced DDR5 from 6000MHz to 5600MHz (kept EXPO enabled) based on 9950X3D compatibility issues
4. FCH Spread Spectrum - Tried both enabled and disabled  noticed it made things worse when enabled)

Current Status: Still getting the same DPC_WATCHDOG_VIOLATION crashes despite all BIOS optimizations. The issue persists with  HYTE Y70 riser cable setup.

Riser Cable Testing - tried multiple riser cables:

• Original HYTE 4.0 riser cable → crashes
• LINKUP 5.0 riser cable → still crashes
• Both failed with the same DPC_WATCHDOG_VIOLATION errors

6. BIOS Optimizations Beyond Basic Settings:

• Disabled Fast Boot and ERP
• Set all PCIe slots to Gen4 (not just the GPU slot)
• Unified PCIe configuration to eliminate timing conflicts
• Attempted FCH Spread Spectrum tweaks

7. Stress Testing Patterns:

• FurMark runs fine (short bursts, different driver code path)
• Crashes specifically during extended gaming sessions
• "Nap test" pattern - crashes during 2-3 hour unattended gaming
• Crashes happen during sustained load, not synthetic benchmarks

8. Driver Version Confirmation:

• Running latest NVIDIA 576.40 drivers also tired rolling back to the three oldest drivers. STILL have issues with display cutting out then turns into me having to hard reboot or i come back to the windows enter your pin screen seems like its only when left Nap test" pattern - crashes during 2-3 hour unattended gamin does anyone have any other ideas of what to possibly do next?