Long time for loading Entity hierarchy

My PC works well with MonoBehaviours and the compilation time is very short.

However, after adding Entities package 1.0.16 to my project, the entity hierarchy takes a very long time to load, usually 15 seconds. By contrast, my compilation only takes 0.5 s.

It really borders me since I have to wait for the loading even if I made a small change on the C# scripts.

My unity version is 2022.3.14f1c1.