The plugin was quite expensive when it comes to performance, if you have a code for your custom command, it was reading the code each time player runs a command, which is a huge task if repeated much. i wasn't realizing that.

This update doesn't fix it completely, only for codes that doesn't contain any call to any of variable/variable definitions. now it reads them once and just repeat them to each player, without need to read it again.

Also, just realized that the examples in default commands.yml were not working, updated them and added one useful command.