As the player moves further away from the origin coordinates(0,0,0), the player's movement becomes more and more interrupted, and as the player moves further away from this point, the player stops moving at all. In my opinion, this seems to be a problem caused by differences in world systems. It has been a long time since Java Edition changed to use a 64-bit system, but the problem seems to have arisen because Bedrock Edition still maintains a 32-bit system.(Translated by Google Translate)