Thermostat cycle on/off to often

Wondering if anyone else has seen this problem…

The thermostat works like a charm…but I have an issue with it cycling on and off way too much.
Just tonight, it’s heated for less than 3 minutes clicked off, then it’s back on in 5 minutes.
…and this goes on and on (unless I move the setpoint)

HVAC is an older Trane heat-pump with emergency heat strips.

“Behavior” is set to “More Savings” FWIW

the old Nest never did this…

thx