I've experimented with two files cause they seemingly are providing a way to just adjust numerically everything: GameSpeedChanges.sql which has stuff like instant yield scaling and DifficultyChanges.xml which has stuff like player and AI policy, unit, building cost.
I wonder if there is simple way to adjust standard/epic to be exactly half the epic extra time, so +25% to everything, as standard is 100 and epic 150 in the files, that would be 125. Epic feels too sluggish, while standard reduces "empire building" aspect a lot, you basically start good, then rush mid-classical - renaissance, then everything is cooling down again and costs od buildings and tech rise significantly for a nice pace, but as soon as you past corporations and dig into ideologies everything breezes so much again, many times I'm not able to use most units or construct many atomic bombs before I unlock nuclear missiles. Ideally I would play something like +15% tech, units, buildings, but +25% tech cost, upgrade unit cost and building maintenance cost. Epic is everything +50% cost/time (of those that scale at all with gamespeed, some are not).
The files I mention don't work fully, for example I raised unit, building cost but it doesn't apply on cleared cache new game, but for some reason tech and policy cost increases did apply.
I wonder if there is simple way to adjust standard/epic to be exactly half the epic extra time, so +25% to everything, as standard is 100 and epic 150 in the files, that would be 125. Epic feels too sluggish, while standard reduces "empire building" aspect a lot, you basically start good, then rush mid-classical - renaissance, then everything is cooling down again and costs od buildings and tech rise significantly for a nice pace, but as soon as you past corporations and dig into ideologies everything breezes so much again, many times I'm not able to use most units or construct many atomic bombs before I unlock nuclear missiles. Ideally I would play something like +15% tech, units, buildings, but +25% tech cost, upgrade unit cost and building maintenance cost. Epic is everything +50% cost/time (of those that scale at all with gamespeed, some are not).
The files I mention don't work fully, for example I raised unit, building cost but it doesn't apply on cleared cache new game, but for some reason tech and policy cost increases did apply.