GPS RTK drift in mission planner

Hi there,

Im having some difficulties with mission planner showing my GPS RTK as drifting around by several meters, when ublox is saying that the drone is sitting in a fixed location. Im at a loss as to why it would do that. Its not a constant thing, it seems to happen randomly, sometimes it wont happen at all, and sometimes itll happen shortly after getting a fix, and sometimes after sitting for a decent amount of time.

Any help or insight would be appreciated!