I suppose there is some *.rpy file with a line like this:
Code:
config.rollback_enabled = False
Find it and comment it to enable the rollback: open the file and add a hash symbol (#) at the beginning of the line.
Notepad++ is great both for inspecting multiple files and for editing the code.
Alternatively,
this file should work: move it inside the "game" folder and rename it as
zzz.rpy
(this method may fail depending on the file path).
Or: open the console (
Shift + O
as in Oscar), type
config.rollback_enabled = True
, press Enter and then Esc.
(edit: maybe this solution doesn't work, once the game has started. It's fine for other settings, e.g. the game language)
I don't know about skipping text, but there is a similar option:
config.allow_skipping
Be careful and backup your saves: if the rollback has been disable, it's probably because it may mess up your progress.