Hello
Three your messages was united to one topic because it's a one question.
Question of multithreading support is not easy. Stable work is depended from purpose of threads creation, from implementing of calls and from other thing.
I think that I must look your application and debug it before answering where is a cause of problem, I need more info.
Could you show it by TeamViewer?
PS. If you have a test-application where a problem exists, please send it too.
Sorry, we don't have enough time to wait until you fix this bug. We started to work without AC in this project. (We need to finish this project on next week)
Maybe, later we have enough time to help fixing this errors.