In this way it has rough animation.
Do you know the fix how?

what you want to do is go to your Entity Browser in radiant.
then you go to script and select model.
now drag model into your map and klik on the 'n' button on your keyboard.
this will bring up the Entity info window.
with the script_model box selected that you have draged into your map scroll down in the Entity info folder untill you see 'model'.
the Value of the model wil be empty now fill in the moddel that you want to have. (also make static true)
like this:
model      |        p7_fxanim_gp_vine_wire_ivy_green_02_smod

you have to do this with al the glitching in game models.
did this help you?