RMSE results close to zero

Hi everyone
I have developed a pytorch code for video image recognition. I have developed it by 3DCNN and Regression. The code works but my problem is the RMSE and MAE are very low and close to zero which is not expected since other reseachers results is around 6 to 8 for the same data. I couldn’t find where is wrong. I would greatly appreciate it if someone could help me by reviewing my code. Please let me know if you are happy to do it and then I will share the code.