Hello Charudatta Bandgar ,

hope you are doing well. 

After a long time with this issue unresolved I found a new clue. I should have mentioned earlier that the Results from different version were calculated on different computers. As I was finally able to upgrade to the 2020R2 version on my older computer as well. What I observe is that there is still a difference between the results. I could only think  of the hardware/GPU has an influence on the results.

Sadly, this is a big show stopper for using Discovery Live, if the results calculated on 2 different computers for the exact same problem do not match, as this puts doubt on the credibility of the results. 

Hope you would be able to help me with some tips after these new findings.