The mode is intended to increase freezing performance under the manufacturer's stated conditions. A change in running time can therefore be expected while it is active.
What the observation tells you
That explanation should not be used to dismiss extreme noise, overheating signs or failure to cool. The mode may end automatically or require cancellation depending on the model. Its indicator must be interpreted using the correct instructions.
A useful next step
Check whether the mode was deliberately selected and follow its documented duration. Return to normal operation as directed and report any persistent abnormal behaviour after the intended task has finished.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.