From the linked patch notes:

  • Reduced polling rate while the Steam Frame Limiter is active to save additional power. This can save up to 6% on battery life when running at 30fps in a low-power game like HL2
  • @ozymandias117
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    136 days ago

    I constantly see people talking about playing things like Balatro on their deck that certainly doesn’t need more than 30fps.

    Seems super useful for games like that on a flight