Why Unity uses so many task manager processes?

I'm on unity 2021.3.1LTS HDRP project. I'm getting so many "Console Window Host" and equal amount of "Unity Shader Compiler" Processes in Task manager when I'm in my project. Also this leading the project takes so much time to compile than usual. (To enter and exit playmode, etc..) The moment I open the project using Unity HUB project run smoothly for few minutes and start slowing down. (There are only few processes when start the project.)

I'm also having an issue with project window not showing packages in unity packages directory. They can be accessed using windows directory, But they are not showing inside unity. (It only display In App Purchasing. But not others.) All those hidden packages are working fine but I can not access them. (Textures, Scenes, etc..) I'm not sure if these are related. Looking for a solution.