Create graph is very slow

Neo4j Graph Platform
1

I use the cypher like:

CALL gds.graph.create.cypher(
    'mygraph',
    'MATCH (n) RETURN id(n) AS id',
    'MATCH (n)-[r]->(m) RETURN id(n) AS s, r.cost as cost, id(m) AS t'
);

to generate a new graph with name of mygraph, but it run an unexpected time(like more than 2 hours in a small graph with only 3000 nodes).

What happened on it? what is the normal performance of create graph cypher?

Anyone has more information? Thanks!