When I run my tests, invariably the last VU seems to hang and skews the results. I've attached a screenshot that is representative of what I keep seeing - almost entirely sub-5 seconds until the very end of the test.
Is there something I'm doing wrong in the design that does this? It's throwing all of our numbers off.
You said the "last VU" only has that issue so do you get this when the test is stopping? And so do you get a slow ramp down of the users when the test is stopping or the load immediately drops?
What is the stop policy for your populations? It is set in the advanced panel of each population.