The project is unstable, does someone download and run it properly?

[shineYuSong]

I use python3 and pytorch 1.4, so i change the print function and the range to range respectively, then i run the project directly, while the result is shown unstable, for the test data, test video varies seriously, and different train test combinations suffer the situation commonly, is the normal circumstances ？do I miss something? or is the version problem or something else?