Hi there,
Our price is updated every 5 minutes and is only lagging when there are problems with the API as DeaDTerra states. If you do see a rate that is severely off please let us know at support [at] safello [dot] com. Also note that it's only the display price that may be off, the actual execution price or your order will be at the correct rate. The API call for executing the order is stable while the display price API call is sometimes not.
Kind regards,
Frank Schuil
CEO & Co-founder Safello