At the moment, there’s no ‘right’ configuration as everything will depend on the VPS server capacity, the chosen control panel and the structure of the website. There is a chance to fine tune the server parameters on VPS since you can use root access.
When the site works under the WordPress CMS, there are some basic recommendations as far as server configuration goes:
Apache + Ngninx / Litespeed (processing Fcgi / php-FPM);
MySQL (MariaDB 10.2 and later);
Using the php 7.4 and later version with additional opcache and memcache (memcached) modules;
Configuring the caching service (memcached | redis) and using caching plugins on the basis of the given server.
You can always reach out to our tech support to receive professional advice in regard to VPS server configuration so that your website needs are well met.