I definitely don't get that much trafic. I only have about 400 pages viewed per day.
Our max connexion is set by default to 50.
So it is more related to an issue with the PHP code you think?
We have an affiliate programme so everytime someone uses the affiliate link, wordpress has to look for who the sponsor is but I'm pretty sure this wouldn't cause any issue.
I've finally been able to increase my RAM to 4GB, edit WHM and wp-config to take this into account. We have less issues.
But still... I was just going to log into phpmyadmin and it won't load for some weird reason. I get the 504 error : gateway timed out.
This is so weird...