I checked and the "use original value from GPS" is unchecked, all good there. As I mentioned in my second message, changing the "smoothing buffer" from 2s to 5s resulted in a lot better recording..
I've run your training through Training Simulator and noticed that your speed is contantly oscillating between 0 and 15 kmh. Are you perhaps using "GPS speed" instead of normal speed calculation (see Configuration >> GPS configuration >> use original value from GPS (must be unchecked)).
You could also try increasing "Speed smoothing buffer" (should be 35 secs).
Before I went for a run today I looked at the settings and changed the "smoothing: Speed Buffer" from 2s to 5s and that made a big difference. So, I guess I answered my own question, smile..
See this run as an exampl
http://www.gps-sport.net/trainings/3-mile-around-the-Mall_1571573
I have seen this issue lately, I don't think it was like that earlier. Are any settings affecting this or is it a bug?
I'm using Samsung S4 SGH-I337, Android Version 4.4.2