I have developed a packed library *.lvlibp with a few analysis vis which shell be called dynamically by an external exe. I call this vis via the open vi reference. Unfortunately this call (wait until exit of vi) takes very long. My test shows that when I call this vi via the vi-ref it takes 33 seconds - with integration into the external application via sub-vi only 400ms. Is there a way to accelerate this dynamic call? The values to the vi ref are set/get via the control-value attributes.