No problem, thanks for your help.

To synchronizing objects needed much more time on 2.76b. It was 6:27 min. You can´t see it in my notes, because the notes are from a second try.

I´m sorry. I don´t think so. Have a look at my Render Notes.

Thanks a lot. I have change the settings and the temperature is below 60° C.

Thanks for the note. I render with CPU and MSI Afterburner shows me a temperatur of 66° C. Am I right that Fahrenheit is used in the USA? So it´s 150.8° F. I think this temperatur is ok, isn´t it?

I´m so sorry for my very late answer, but I had very big problems with my work and no time to make a render test.
But anyway, here is my answer.
Yes, the problem persists with disabled scripts by loading factory settings on 2.76b. I have downloaded it as a zip file and ran it on my desktop. It needed much more time, around a minute, per frame and became more and more slow.

Yes, the bug didn´t appear on 2.74 with those 2 scripts activated and of the same version.
Here is my blend file. The animation start at frame 865.