He is absolutel right, setting to 100% right now is burning money. On your post, this probably cost you over 100$ at the moment!
I recorded a video about this, explaining it plus another expensive mistake! Be sure to check it out: https://steemit.com/dtube/@theaustrianguy/db0silea

But hey, 21$ is still great for your intro :)

Resteemed you with @welcoming by the way, my service where I resteem promising minnows like you! Greet!