DO NOT TURN THE TIMESCALE TO 0.05!!!!

that would equal 20 turns to one year!

if you want 6 months to a year turn the timescale from the original "2" (as in 2 years to a turn) to 0.5 (as in half a year per turn).

Doing this changes NOTHING else in the game, except how many turn you get. A building that takes 4 turns to complete in the normal game (i.e. 8 years) still takes 4 turns to complete in a 6 month a turn campaign (i.e. 2 years). If you want to buildings to still have their same build time, you will have to mod all the build times to be 4x longer then they normally are.