I have made a submod for Conflictus Antiquarum Culturarum (CAC), which changes the Grand Campaign (272 B.C.) from 2 turns-per-year (TPY) to 1 turns-per-year (TPY). Maybe someone like to play 1 turn-per-year.
Technology research time and building construction time/cost are changed to 1 turns-per-year (TPY).
!!The Submod only applies for the Grand/Main Campaign in Rome2 using CAC version 1.x. When playing any other campaign the Submod must be deselected/disabled!!
Download link.
Try it and post you feedback.