:term:`GDMA_SWITCH <GDMA_SWITCH (GDMA)>`
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      The value to switch between the older standard DMA and the new grid-based approach. Pairs of primitives whose exponents sum is above this value will be treated using standard DMA. Set to 0 to force all pairs to be treated with standard DMA.

      * **Type**: double
      * **Default**: 4.0

