5.4.0 A1 r1- deDE problem with freeze after login

[Creepy666]

As the subject says, I always have a freeze of WoW for 4-5 seconds after each time a toon is logged in.
This goes along with a completely white (separated) minimap.
After that freeze, the minimap shows the terrain correctly.
Disabling Carbonite fixes that, so it must have something to do with the addon.
Seems to be a cache problem?

Can't add a screenshot for that, because this function is also freezed.