Speeding up and slowing down around curves

I finally got my retrofit/upgrade to UCCNC equipment and software up and running earlier this week. I’m starting the process of dialing in the settings, speed, etc. I’m trying to figure out why I’m getting big fluctuations in speed as the torch goes around easy curves. I’m sure I’ve got something setup wrong. I attached a link below to a video that clearly shows the issue several times.
https://vimeo.com/498180306
https://vimeo.com/498180306