GP1870F freezing, misalignment, delay

[Sanju@Mantech]

GP-1870F unit updates position with a few seconds' delay, misalligned with the past track.
Old version was 1.1.8.We updated to 2.0.4.
But the issues still persist. Videos and photos attached.
Any insight will be highly appreciated.

 

[FishTech]

Are you using an external GPS antenna? If not, it could be getting some increased HDOP or multipath from using the internal GPS inside of a cabin.