I work in the Network Group and we do not have any access to our Domain Controllers. I need information on how much or little overhead is added to a domain controller when running UDT.
I discussed your question with engineering and the answer is that there's verry little or almost no overhead.
UDT access rights must be set to at least Event log readers level. By default it reads the log each 30 min. and it only reads new data (difference to the last read).
We have never encountered any problem related to overhead on a DC.