Start/Stop/Reset of Chronograph Impacts Accuracy?

I was timing a few events in quick succession today with a Speedy.

Afterward, I noticed the watch lost about 1 second.
Curious, I played around with the Start/Stop/Reset a few times, and I was able to reproduce the result.

Does Start/Stop/Reset impact the amplitude of the chronograph and cause the change in accuracy?
I know having the chronograph running can alter timekeeping in some watches, but I have not heard using the pushers can alter timekeeping a significant degree as well.