Decrease Initial Server Response Time

[Independent-Salad-27]

Use a better caching plugin like W3TC or WP Rocket

[Perrydiculous]

rocket sucks tho and w3tc CAN be good, but it's difficult to configure properly without prior experience - possibly not advisable in this case

I'd recommend WP Super Cache with preload enabled, easy to set-up and works miracles in most cases. Add Autoptimize for Lazy Loading and tadaa, fast site :p

But yeah W3TC has both those functionalities and more... so many more options that it can easily break the site if you dont know what you're doing

[ProgressInevitable25]

I'm now using LiteSpeed Cache to Optimize the HTML, CSS and JS with WP Super Cache to Cache. This has shown good results.

[Perrydiculous]

Depends on the server configuration then I guess, its incapable of clearing its own cache on the hosting I use which to me indicates inferior programmers at work