Daqmx clear taks freeze

Hello,
I am facing a problem with clearing daqmx task, mentioned part of my vi in attachment.
LabView2011, Daqmx 14.0 - what happens is, that after the loop is finished because of any stoping signal, sequence freezes, and it takes like 5-10 seconds for it to clear the task and move to another stack.
Any ideas what might be the cause and how to fix it? The same vi runs on another PC and works fine.
Greetings
Attachments:
error.png ‏66 KB

I am not able to provide all of those information at the moment, but for sure DAQ hardware is the same, CPU and amount of RAM are the same or only faster/more, DAQmx version is 14.0 (older station probably has 9.7.5), both LabView2011.
Generaly idea was to copy all possible automation components and software, so differences will be rather insignificant and in advantage for the new station, where the problem occurs (like for example the same PC station wasn't any more avaiable, so there is similar model from the same producer). For sure I installed up to date DAQmx software.
Back to the code quality, I am aware that it is horrible, but as I mentioned before, I am not the author and I would love to prepare it all from the begining, but unfortunately there's no time - I just hope that my another LabView project will be a completely new solution

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