An increase, but those effects are noticed with traditional atomic clocks too. The simple act of moving them between biuldings results in detectable GR effects:

An increase, but those effects are noticed with traditional atomic clocks too. The simple act of moving them between biuldings results in detectable GR effects: time dilation from acceleration as someone pushes the cart. A more accurate measure of such things could yield a functional GR-based accelerometer/gyroscope.