In The Good Place, the first time Janet is rebooted she takes quite a long time to get back to normal; she starts handing people cacti and generally being unhelpful.
But what happened the (at least) 800 other times she was rebooted? Michael reboots her every time they restart the experiment - she's not working directly with him, after all - and it's not shown that she takes any time at all to get back up to speed.
So... does it happen, just off screen? Or does she not need the long time to get back up to speed after that first reboot?