OTClient Items duration

[jestem pro]

Hello,
trynna change the items speed(duration) in const.h in OTClient(Mehah) I have found a paradox.

The client has a feature "enhanced animations" so its ignoring the values from const.h and get values from .dat.

const.h

INVISIBLE_TICKS_PER_FRAME = 150,
ITEM_TICKS_PER_FRAME = 150,

.dat file

although I change these values, it happens nothing.

so how can we resolve the problem?
1. Adding some variables to .otfi file which I use

DatSpr
  extended: true
  transparency: true
  frame-durations: true
  frame-groups: true
  metadata-file: Tibia.dat
  sprites-file: Tibia.spr

maybe:
minimum-duration: 150
maximum-duration: 150

2. There's another solution for this.

Every piece of information is important.
Thanks in advance.