For my understanding on the way Encounter works , there is no real way to do what you want, optDesign will use all available cells to fix timing issues, all means all available VT cells.Originally posted in cdnusers.org by bougantp
optLeakage goal is to work on DB trying to switch lowVT cells to highVT cells.
Please try it after optDesign -setup.
Personnaly I use it and the gain of leakage is very good (The CPU runtime is not negligeable...).
Another impact of this command, it help Hold fixing, so I use it just before optDesign -hold.