Drone still moving in waypoint with RTK M8P

I have a gps rtk here+ m8p which unfortunately integrates with the pixhawk. I managed to get 0.2m surveillance. but why is it that when I want to set a waypoint mission, the vehicle on the monitor always moves so I’m confused about where to place the waypoint

May I have your information from “Optional Hardware/RTK/GPS Inject” while connecting in Mission Planner?

Yes I am using gps inject in mission planner with COM port, autoconfig off and survey in acc of 0.2, time 60.

May I have a screenshot of it? With the received gps signals.
By the way, how does the vehicle on the monitor moves? Is it like continuously moving towards one direction or randomly circling around?