Hey Trenton! Thx for your review!
We can not confirm your experience. In opposite.
Most of the time the plugin does nothing at all and causes absolute no performance issues.
Please keep in mind that the plugin has a lot of processing to do if you have a big amount of links to check.
So if you have a lot of links you should maybe disable the daily check and do your checks manually.
I was just checking the pagespeed of a website using this plugin and it is on Google Pagespeed at: Mobile 98 and Desktop on 100 points.
Best regards!
