mobspeed script

[xVenom]

well, i have a little problem with my mobspeed script, and i guess it is because of my laptop ( a bit low fps ). i use same script as some of my friends and it works for them, but not for me the mobs dont have speed at all, they move with same speed as normal, but they shake crazily towards me and oposite site of me. if any1 can help me with a better mobspeed that is lag free please help me :d here is the script i use

[ENABLE]
aobscan(_aMobSpeed,80 7C 24 04 00 74 06 D9 40 70)
label(_aMobSpeedLabel)
registersymbol(_aMobSpeedLabel)
alloc(DrakoMobSpeedBace,2048)
label(MobIsWalking)
label(MobRunSpeedValue)
label(MobWalkSpeedValue)
label(ReturnMobSpeed)
registersymbol(MobRunSpeedValue)
registersymbol(MobWalkSpeedValue)

DrakoMobSpeedBace:
cmp byte ptr [esp+04],00
je MobIsWalking
fld dword ptr [MobRunSpeedValue]
ret 0004
MobIsWalking:
fld dword ptr [MobWalkSpeedValue]
ret 0004

MobRunSpeedValue:
db 00 00 60 41
MobWalkSpeedValue:
db 00 00 40 40

_aMobSpeed:
_aMobSpeedLabel:
jmp DrakoMobSpeedBace
ReturnMobSpeed:

[DISABLE]
dealloc(DrakoMobSpeedBace)
unregistersymbol(MobRunSpeedValue)
unregistersymbol(MobWalkSpeedValue)
_aMobSpeedLabel:
cmp byte ptr [esp+04],00
unregistersymbol(_aMobSpeedLabel)

thx