Performance creating resources 0.1.0-beta05 and up

[kedegger-ait]

Hi,
I'm seeing a strong performance degredation when trying to create FHIR resources (Appointments in my case) after switching to a recent version of the FHIR engine.

Using a minimalistic app which simply instantiates the FHIR engine and inserts a couple of appointments with fixed IDs into the store I'm seeing the app blocks for up to ~20seconds before I'm getting the successful callback returning the IDs.
The delay was there in previous versions of the library, but doubled starting from 0.1.0-beta05. This is consistent across multiple app runs and hardware devices.

        FhirEngineProvider.init(FhirEngineConfiguration(enableEncryptionIfSupported = false,
            DatabaseErrorStrategy.RECREATE_AT_OPEN))
        val fhir = FhirEngineProvider.getInstance(this)
        GlobalScope.launch {
            val t1 = System.currentTimeMillis()
            println("FHIR: ${fhir}")
            withContext(Dispatchers.IO) {
                val app1 = Appointment().setId("333")
                val app2 = Appointment().setId("444")
                val ids = fhir.create(app1, app2)
                // using '0.1.0-beta02' to '0.1.0-beta04' this takes approx.  6-7s
                // starting from '0.1.0-beta05' including current '1.0.0' this doubles to 13-18s 
                println("Appointments created: ${ids} in "+(System.currentTimeMillis()-t1)+"ms")
            }
        }

Is there any way to enhance performance (e.g. late scanning, ...) by enabling some properties when initializing the engine?
Is this a known issue and can I dig any deeper to see where the app actually spends the biggest amount of time?

Any help greatly appreciated.