If you have selected Fan Forced as your heating type Mysa will default to the short cycling option.
This can be changed to extend the cycling time and avoid the rapid cycling you are experiencing.
Please follow below to access and adjust the Mysa Mode and Fan Speed Settings.
Additionally, you can select Radiant Heat Mode, which will only activate the heater when the set temperature falls by 0.5° C (1° F).
Radiant mode will only be available after Mysa has updated to the latest firmware. This can take up to 3 hours to complete.
For more information on the cycle times, please navigate here.