在config文件夹打开better combat文件夹，打开server.json5文件，找到以下字段
// Applies movement speed multiplier while attacking. (Min: 0, Max: 1). Use `0` for a full stop while attacking. Use `1` for no movement speed penalty
"movement_speed_while_attacking": 0.5
把0.5改成1就没有减速了 该方法来自评论区某个用户