Magic Keyboard slow key input response
My magic keyboard has suddenly developed a problem - after several hours, the response to keystrokes slows to a crawl - 15 seconds or more between keypress and response.
It is connected via Bluetooth to a 2012 Mac Mini running OS 10.12.6. There have been no software updates, new software installations, or system changes of any kind.
The only thing that's different is that this unusual behavior developed after a power failure.
Removing and re-inserting the batteries resolves the problem, but it always recurs.
Mac mini, macOS Sierra (10.12.6), 480GB SSD added to speed things up