I think I figured out the problem with the guest/employees running/walking in place, I built a new zoo and when I let my quest in the park, I deleted a path the guests stopped moving until I put the path back, once the path was placed back to it's original spot the guests started moving again and while everyone was walking and running, three second after the path was added back, one of the guests started running in place every few seconds. So, I think deleting the path when quests/employees are around and then placing the path back can cause this running/walking in place. So, when I noticed it, I just reloaded my game. I tasted this in Sandbox Mode.
I currently made a back up save for my zoo just encase something happens I got 3 saves, one I don't touch encase I have to go back to an early clean save with no errors.