Discovering new world in MTWII questions

[ReiseReise]

Timescale is number of years per turn, default is 2. Changing the time scale to .5 or 1 would actually make it take longer to get to new world, correct?
I think what you really want to do is change the dates for that event.
In the same folder as descr_strat is descr_events. Towards the bottom of descr_events you will find
; ------------ CORE GAME EVENT --------------
event historic world_is_round
date 320 328

Change the 320 328 to something like 150 158 and you will get the new world in 150 years (75 turns) instead of 320 (160 turns)

Or you could change the timescale to 4.00 to make ALL the events (gunpowder, mongols, timurids) happen sooner