Samus will be slowed by lava if SpeedBooster is equipped, even with Gravity.

Requires:

{
  "or": [
    "h_lavaProof",
    "canSuitlessLavaDive"
  ]
}
"Gravity"
{
  "heatFrames": 250
}
{
  "lavaFrames": 190
}
{
  "or": [
    {
      "disableEquipment": "SpeedBooster"
    },
    {
      "and": [
        {
          "heatFrames": 50
        },
        {
          "lavaFrames": 50
        }
      ]
    }
  ]
}