Shapeshift form problem (MOP)

[zayq]

So my problem is with shift forms as feral druid.I am playing with stable 78ms internet and 40-30fps.When I shift form cat or bear even traveler I am having huge fps drop,for example from 30 to 14-10,it makes my class not playable.It happens same as boomkin,but it laggs not that much.Any ideas how to fix that?
If anyone could help me,please contact me : Zayzoo (Frostwolf realm - mop).Thanks

UPDATE:

Downloaded fresh MoP client from Warmane,still has the same issue.Any ideas why :( ?

[skullatbash]

try to disable all your addons
Are you using MoP with WoD model?

[zayq]

Just tryed deleting my WTF folder and disabling all addons,same thing happens.No I am not using WoD models.

[skullatbash]

does it happen only when there many other players around you ( capital,bgs) or always?

[zayq]

Tryed it at a lot of different places,when its crowded and empty.It happens same

[skullatbash]

mm idk, in your shoes I would try to download again the client, from here: https://www.warmane.com/download ( the MoP Old is better)

[zayq]

Still same issue,just downloaded new Warmane client,with 70~ms and 30 fps it goes to 12-14 fps for 2-3s in crowded and even empty areas :(