RTX 5090 Test: Sage Attention Accelerates Video Gen, Spectrum Node Degrades Quality
SilliusApeus · reddit · 2026-08-13
A developer using an RTX 5090 GPU shared benchmark results from their video generation workflow. By utilizing Sage Attention with 10 steps, generating a 0.2 MP draft video takes only 18 seconds.
However, integrating the Spectrum node did not significantly reduce generation time but noticeably degraded the video quality. The author initiated a discussion asking if these nodes are overkill or if the step count should be increased when using Spectrum.
Related event: RTX 5090 Test: SageAttention Significantly Boosts Video Generation(2 posts)→
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