Excessive memory in Apache Xampp

I have a slightly odd wordpress installed in local, however, throws mysteriously. The VHosts module is activated.

My problem is that the ram that consumes Apache as I use it increases gradually and cautiously, that is to say that when I use Apache, I increase every second of about 100 MB of RAM. I even used 6GB of RAM something that I find excessive. The memory limit does not seem to work.

This is the latest version of xampp v3.2.3

Thank you all for your responses.