for me and my clients all calculation fields run well.
There can be several reasons why yours don't update so it's hard to advise.
Maybe you can try this: Open the template while you're in one item, click into each calc and enter 2 or 3 blanks at the end. This triggers the calcs manually. Save the template and see waht happens.
Another option: Change something in one field which is referenced in a calculation field.
If nothing doesn't help submit a ticket to Podio support.