Smart slider 3 loading slow

For the free version of smart slider 3 has not full-page view.
Another big issue with this slider, At the first time when hit the URL My whole page content loaded completely but slider load too much slowly. ( view screenshot) My client is not happy with this issue.

Please help me How do I can fast Smart Slider 3 loading issue and also as well as my website.

Hello there,

I am sorry for the long delay for holidays. To improve the main slide’s speed and entire site, you could implement the instructions as outlined in this codex:

https://codex.wordpress.org/WordPress_Optimization/WordPress_Performance

Regards,
Kharis