Having an uox.ini-setting like NPCMOVEMENTSPEED is good, but to be able to control both their walking speed and their running speed would be even better! As it is, it's very hard to find a setting where NPCs move at acceptable speeds both when walking and when running.
If you don't want them to outrun players in combat, you must make turn down the speed, making them very slow while walking. And if you want them to walk around faster, they'll move around like lightning when running. =P
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