Wasp250 x3v rudder problem

HI guys, thanks for all the work. I trying to run my skyartec wasp250 x3v with my devo12s with deviation and everything works great so far except my rudder servo. I've tried differnt servo I've got 2 wasp x3v and on both of them, the rudder servo move slow, like crawling really slow and I can't figure out what it is. I've tried playing with the servos speed in deviation but nothing. Please help!

You can see in the channel monitor what is sent out to the rudder channel. If this reacts as expected it should not be a matter of deviation / the tx.
Do you have configured the gyro as it should be? Such a smooth movement can be generated by the stabilization which moves a servo slowly to the limits. Maybe you can reduce the sensibility?
I don't know the Wasp x3v - can you control the rudder sensitivity with a dedicated channel? If so I would try to play with the values there.

OK I tried playing with the sensitivity and it doesn't change. I go a tried to find if a dedicated channel is how it should be set, but it hard to find any info on wasp x3v. I'm hopping somebody else had that same issue.