Can Ansys System Coupling™ physics solver connection software be configured such that the participants update at different frequencies?
In 2019R1 there is BETA capability which allows this to be done using the command line workflow.
Below is an example set of commands to accomplish this:
DatamodelRoot().ActivateHidden.BetaFeatures = True
DatamodelRoot().CouplingParticipant['FLUENT-1'].UpdateControl.Option = 'StepInterval'
DatamodelRoot().CouplingParticipant['FLUENT-1'].UpdateControl.UpdateFrequency = 5
DatamodelRoot().CouplingParticipant['FLUENT-1'].UpdateControl.PrintState()