FHIR Connector is loading slowly large data sets

We are experiencing huge delays when loading big datasets from our FHIR Server.

I am talking about 1 Mio+ records, which take close to a day to fully load.

The main problem seems to be the way how the FHIR Connector is loading the data:

- Small sets with small offset (about 200 for each request)

- No utilization of FHIR export feature

Is there any way to tweak the connector e.g. by overwriting the default offset size?

Our server would have no problems to serve sth. like 25k records with each request.