Many times VPS performance drops when the customer did not get an appropriate spec VPS for what they are doing. EX: a 256MB RAM VPS to host 100 web hosting clients
I would be curious to ask what the specs of your VPS are...?
my.cnf and apache settings assuming it's a linux OS based VPS...?
█ Performance & Quality Dedicated Servers & Virtual Private Servers
80+ CPU Types, 28 Locations, Affordable Prices & Excellent Support!
99.9% Uptime, Multi-homed BGP Network, DDoS, Managed Services, and more!