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It is about power consumption. They could, if they wanted, automatically opt existing applications to use 120 Hz refresh. But the power usage would be terrible
by Someone1234 5y ago
It is about power consumption.
They could, if they wanted, automatically opt existing applications to use 120 Hz refresh. But the power usage would be terrible, and it would be up to application authors to manually go in and tune it down (which many would not do, or would take too long).
So instead they keep them at the current refresh, and have them "opt-in" to higher. Which I'm imagining Apple is hoping application developers will do responsibly and only ask for 120 Hz when it is beneficial (although big YMMV).