Movement speed bonus is complex to calculate: https://irowiki.org/classic/Movement_Speed All bonuses are not stackable, for example: - Increase AGI skill makes MSPD bonus provided by items ignored - Speed potion override any MSPD bonus - Some bonus are capped to a max value see: https://github.com/rathena/rathena/blob/0bd7fd2ba0d73ccfa7b20e46444d3959e96f9adc/src/map/status.cpp#L8024
Movement speed bonus is complex to calculate: https://irowiki.org/classic/Movement_Speed
All bonuses are not stackable, for example: