# What we turned off to make Helios faster on one H100

> The fastest-looking option on paper did not survive the second minute of a run.

Source: https://windflow.online/blog/helios-single-h100 · Published 2026-07-21 · Windflow Engineering

FP8 looked like the headline win until minute two of every run, when accumulated quantization error collapsed the stream. It ships disabled.

What held instead: FlashAttention-3, a compiled hot path, and a playout ladder that stopped throwing generated frames away.

Then there is the box lottery. Nominally identical H100s do not behave alike, so an engine-verify gate now runs before any box takes traffic.