I set the player action in hotspot to "walk to marker", and then it will cause the character walks very slow before reaching the marker, but after trying several times, it returned to normal speed. Any idea to solve it?

Unity version: 2020.3.17f1c1
AC version:1.76.3
Comments
Is the Player's position on the Z axis changing? Try viewing the Scene window from an angle to see if they're moving to/from the camera.
Yes! This is the case! I know how to fix it now.
I teleported the character to a marker at Z axis value 15, and then made him walk to a marker at Z axis value 0.
Thank you so much!