I have set up GPSGate for a custom tracker that I will soon make available to the world and it's working great except that as soon as the speed is beyond about 200 knots, it reports 0.0 kn in the "Track points" window, but the marker correctly shows the speed (eg 260 kn). When the speed is below 200 knots, both Marker and Track points window show correct speed.
Here's a screenshot that shows the error when speed is 260 kn. Notice that during the climb when speed is below around 200kt, it shows fine but as a as soon as speed increased, it shows 0.
Here is another screenshot at 174 kt when the aircraft is slowing down during approach, both marker and track point window show correct speed: https://drive.google.com/file/d/1Ft-cy8bRq4M5BVJVnU3cmVQrzMf9EHup/view?usp=sharing
For a previous fix that didn't work correctly, (speed was 232 kn), this was the string sent to the server. Speed made bold.
For the fix that was 174 kn, and which worked correctly, here's the string that was transmitted:
Any help would be greatly appreciated.