You're welcome. I think that this thread is necessity because it was clear after second page that I am not only one with these problems (unfortunately). Even if my Apple fixes my computer, I will let you know what fixed it and what excatly happened. At this moment I will not share any specific details except that Mac is at my local Authorised Service Provider since 30.01.2017. (with exception of one weekend). I think that this is good thing because there is quite a few of us who came to same conclusion. If computer works fine under one OS version loaded with heavy apps and then starts crashing after 10.10.. this leads to basic root of the problem. One thing I would really like to test is stability of nMP with eGPU. Anyway, I will keep you posted.