The problem of improper use of RAM in ASP.NET Core Web API project

Question

I have an ASP.NET Core 6 Web API project.

When I'm running the project, my project takes about 2 GB of memory!

I found this problem in the dotMemory application:

There seems to be a problem with this part (Routing)

My project has some routes.

For example for every action, It has four routes.

They are defined like this:

Where do you think the problem is, where did this memory problem come from and how should I solve it?