Update.
We have been performing some speed tests comparing 6.1 SP8 MP2 versus 7.5 and during our testing we confirmed that NO_ACCESS_PROCESSES appears to have no effect hence why it is not longer listed. In our case, streaming Maple 17 to a Dell 990 running SWS 7.5 and Trend takes approximately 38 seconds. Also, with the NO_ACCESS_PROCESSES explicitly denying Trend's related processes, it still takes 38 seconds. However, removing Trend from the system and running Maple results in a time of 26 seconds.
Caveat Emperor!