Ticking, gets louder with acceleration but lightens up when cruising?

check for bent pushrod,valve train problem

It sounds like you may have a rocker arm that need to be replaced, I would see if the noise is coming from the upper part of the engine and then remove the valve cover for inspection. Please go over this guide as well

https://www.2carpros.com/articles/engine-noises

Here is how to remove the valve covers. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.