how can I avoid crash of Kontakt in Reaper?

Personally I wouldn't know the reason for that but still you could contact dedicated Kontakt support and ask what they think is the problem or if they can help , and include the information that you just posted here !!

While I sympathize with you and understand why you think what you do then I am sorry I can not agree with your conclusion.

I , having at least some understanding of programming , knows that any choice made using the program routes inside the program and different choices = different routes , meaning different code use or different combination of the use/running of the program code. So while you would think that your order of choices shouldn't matter then it does , and you have proved it by producing different results.

The thing is that the differences in program execution could also cause e.g. a different CPU utilization and so could choosing another library all together also. I am not privy to program source code and even if I had been I wouldn't have been able to deduce sufficiently about the difference of use of e.g. CPU by running parts of the program in different order.

I am sorry to have to tell you but I think that you will have to listen to the advice and guidance given to you by support or at least take your tests to an environment that fulfills that requested by support and then if you wish then continue your dialog with support if you find that the advice and guidance given by support did not help when followed to the letter !

Trust me I know what a pain it is to have to do all sorts of things to try to get to the bottom of something and what work it can be to 'seek support' but still then that is the way that stuff works ! As for the re-installing of Windows then what you do is to acquire sufficient knowledge in the use of backup programs and then you take a full image based back up of your system drive and if necessary disconnects any drives you do not want altered and do not want to take backup of, and then you re-install as asked and if you find out that that did not change anything then you load your backup back to your computer. However , if support have already deemed the CPU too poor then re-installing Windows IMO would be a waste of time because then even if it continues to fail then you would not have followed the advice and guidance of support to the letter anyway !

Thank you very much for the very kind feedback ! 🙂

Quote : "I am only saying that maybe exist some alternative problem here."

Quote : "I think the problem is not my i3 processor. I"

I agree that you could be right , and what you write could be possible !

But being a realist then I will have to adhere to the specifics of specifications given by N.I. . Also I think that it is very important to understand here that if N.I. support, or for that matter I as just another user, had to test all hardware setups not meeting specifications given then not only could N.I. not do anything else but also it would be completely meaningless for NI to give a specification/requirements in the first place !

I can only wish you the best luck with your testing and hope that you sooner or later may reach some indisputable conclusion one way or the other so that you can get on with using your software instead !

Best wishes ! 🙂