Slow sites almost always come down to the same handful of causes, and the server is rarely one of them.
MEASURE FIRST
Run the site through GTmetrix or PageSpeed Insights. Look at the waterfall chart: it tells you whether the delay is in the server's first response, or in downloading assets afterwards. Those two problems have completely different fixes.
SLOW FIRST RESPONSE
No page caching, so every visit runs the full application and database A heavy plugin or theme doing too much work per request An outdated PHP version Slow database queries, often from a bloated database Hitting your plan's CPU allowance
SLOW ASSET LOADING
Enormous unoptimised images Too many separate CSS and JavaScript files
Third-party scripts: chat widgets, trackers, embedded videos and ad networks
No browser caching or compression No CDN, with visitors far from the server
THE USUAL ORDER OF FIXES
Enable caching. Optimise images. Remove plugins you do not use. Update PHP. Add a CDN. Most sites improve dramatically on the first two alone.
If the site is still slow after all of this, open a ticket with your GTmetrix link and we will check the account from the server side.
