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[Nathan Mitchell]

Hey everyone, just wanted to circle back and say a huge thanks — I followed the advice and changed that BIOS setting (I had IOMMU disabled on my rig thinking it’d help with my capture card, but it was actually the root of the instability). Framedrops completely stopped after enabling it and pinning down my DMA device in the I/O table. Turns out the device was thrashing memory pages with nowhere to hide. Everything’s rock solid now, hitting consistent frame times even under load. Really appreciate the help sorting this out — this thread is going to be gold for anyone dealing with similar PCIe DMA headaches. Cheers!

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"Hardware is just a tool; game sense wins matches."

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