Presets which have been programmed on some editors, like DEXED for example, may benefit from setting Velocity Level to 12. Other presets coming from other sources or editors might sound better with Velocity Level set to 100. If you have a hard to play keyboard or just want everything to sound "louder" or "more brilliant" and you don't like to press the keys so hard, you can set a higher value here.
Presets which have been programmed on some editors, like DEXED for example, may benefit from setting Velocity Level to 127. Other presets coming from other sources or editors might sound better with Velocity Level set to 100. If you have a hard to play keyboard or just want everything to sound "louder" or "more brilliant" and you don't like to press the keys so hard, you can set a higher value here.