1500 rows database is too much?

I am testing my app with information about places.
To test I used a database with 10 places.
Now I want to use it with the real database, which has approx. 1500 points and the preview works really slow.
The database is from firebase realtime database.
I wonder if 1500 points is too much.
I also tried to download database to the phone to use it offline but it is the same.