Minimax H3 quality issues on RTX 4090 but not RTX 5090

FoxTrotte · reddit · 2026-08-24

A user reports that Minimax H3 in ComfyUI works fine on RTX 5090 up to 4MP, but on RTX 4090 glitches at 3MP, causing pixelation on fast-moving objects. SageAttention and drivers are verified, but the issue persists.

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