As I found no easy script for slowing or increasing text speed without depending upon other scripts, I ended up making a simple one. Idea was based on Krimer's script.
The script allows to change the default text speed of message boxes. The developer can set the default speed when the game loads for the first time (ie there is no configuration file). The user can change the speed in the options menu.
Features
Can set the default speed of text.
Can change the name of the option in the menu.
Can change the text of each individual speed.
Speeds from slower to fast to instant text.
Terms of Use
Free for use in non-commercial projects.
Free for use in commercial projects.
Credits
Krimer for base script.
Most of option menu based on Yanfly - MessageSpeedOpt.
Changelog
v1.4.1 - Fix a bug where some characters were missing in text after battles
- Compatibility fix with VE SFont script
v1.3.0 - Add toggle instant text key
v1.2.0 - Fix a bug where sometimes the next letter would be displayed when
using wait escape codes ( \. or \| or \! ).
v1.1.0 - Change speed options to customizable text.