Hello, Flow Community.
Since the introduction of the Microsoft Forms connector to the Flow service in July of this year, we have seen a rapid growth of usage and huge amounts of Flows created using the Forms service. Due to adoption rates, we are experiencing heavy load patterns to the service, resulting in much longer trigger intervals.
Thank you for your patience as we work to return the service to the quick trigger intervals. We expect the fix to be in place by middle of October.
Microsoft Forms Team