GPU Optimisation - Custom Resolutions

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Hi.

To max-out the decklink card, it can’t run in RGBA mode. You would either have to run the channels in 16-bit mode to force YCbCr, or run this version, which enables you to opt-out of RGBA in “regular” 8-bit channels. feat: decklink support for chosing yuv output i 8-bit mode · CasparCG/server@fc14684 · GitHub

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As the 8k need 8 PCIe lanes I would check how many it gets. There are tools that show you that, like SySoftware Sandra.