I don't think its a common opinion that its very slow. It builds queries and executes them very quickly compared to most. It does have a built in footgun where

I don't think its a common opinion that its very slow. It builds queries and executes them very quickly compared to most. It does have a built in footgun where for some structures it defaults to invisibly lazy loading sub-collections, you can (almost certainly should) disable that and specifically tell it to populate that data in the first query using Include() or any of the other projection mechanisms. Is it possible you had that?