[Plugin: WP Super Cache] WP super cache and hosting CPU quota

My website (https://brijux.com) recently got too many hits. I have a free hosting account at byethost.

They disabled my account as I used too much of their CPU quota. After request, they have re-enabled my account and my website is back online.

My question is
[1] will using wp-super-cache prevent this from happening again? Will it lower the CPU use on the hosting servers or will it increase the CPU usage?

[2] Also let me know if there is any other way of reducing the CPU usage. (I love the “wassup” real-time-visitor-tracking plugin, but it does not work with cached pages.)

https://www.ads-software.com/extend/plugins/wp-super-cache/