Frame rate cannot stay the same and skip 2 per second at the same time. Either frame rate drops by 2 (it is still frames per second we're talking about) or it stays the same.

Anyways performing the upgrade myself right now; and the goal will be to install RTW in Program Files yet have EB work from elsewhere. (I.e. a setup like RTW in "C:\Program Files x86\Activison\Creative Assembly\RomeTW\" and EB in "C:\Users\Tellos Athenaios\Games\EB\Copy1\".)