Hi Florian,
I'm a bit puzzled about your statement that "paging does not work". Do you only receive the first 200 records and the other records are empty (waiting for fetching the data as shown in the video Video Tutorials about ABAP for SAP HANA at about 3:50min) or don't you get the records at all? Did you by chance had a look at the ST05 trace of the report?
Or on the other hand, do you experience "paging does not work" since it takes quite a while to fetch the data?
One question that comes to my mind, are there aggregations/calculations involved in the HANA view underlying your external view?
Thanks,
Jasmin