Is there a mechanism to subscribe to platform events from a flow 'and' pass attributes to a lightning component - when a new event is delivered (basically synchronously). Already have tried the normal EMP API in Lightning components, however hitting Platform event daily delivered limits. The use case is - when a new record on a custom object is created - we want to get a notification on a custom lightning component.
Are you sure that you will exceed standard PE limits?
If you need to increase the PE or DC limit you can contact salesforce ask for an additional license cost.
If you can afford 2 to 3 min of delay you can try asynchronous schedule apex call based on the last created date. A simple js timer function can help.