That answer is what is known as a "smoke screen" folks. These are basic to 99% of DirectAdmin deployments:Looks like you don't understand a fronted-backend architecture principles and a fast web servers ideology.
1. ALL the normal functionality of Apache available, including .htaccess.
2. The performance and reliability of CLI with PHP.
3. Single physical server environment.
If you don't have a method to improve efficiency of that environment, you are playing with an empty hand.