There is also a setting on the datagrid called "Refresh time in seconds". If you double click the datagrid and open the properties, it will be the first setting.
Instead of opening to a new page, can you simply commit with refresh the list of entities you are displaying on the current page? That should update the page you are on and show the new information. It is possible I am misinterpreting the situation, so could you possibly post a screenshot of the page and the microflow if the commit with refresh doesn't work for you?
Carlo, credit where credit is due. Time to upvote Austin's answer and Tick the checkbox 'Correct answer' next to his answer so he gets credit and we can see in the question overview that this question is tackled.
I expected there would be a setting like this, but I kept overlooking it...