Hi All,
We have this issue that when multiple users are trying to login to the Wordpress Admin side, the server's response is so slow and sometimes we're getting an "Internal Server Error". And during those instances, when I checked the server's resources, it had reached its limit.
Currently, the website hasn't had many visits so normally, when no one is logging in to the Wordpress, all resources are mostly zero
But in this screenshot, 2 user tried to login at the same time and it already consume 100% of the CPU.

I don't really know where to start looking.
I'm asking for your tips and advice.
Thank you very much
We have this issue that when multiple users are trying to login to the Wordpress Admin side, the server's response is so slow and sometimes we're getting an "Internal Server Error". And during those instances, when I checked the server's resources, it had reached its limit.
Currently, the website hasn't had many visits so normally, when no one is logging in to the Wordpress, all resources are mostly zero

But in this screenshot, 2 user tried to login at the same time and it already consume 100% of the CPU.

I don't really know where to start looking.
I'm asking for your tips and advice.
Thank you very much