Try adding a quick cool down decorator in you behavior tree like .2 seconds.
Also, In your Pawns BP there are a couple of things to change
Select Self:
Turn off use controller rotation Yaw
Then in the same BP select CharacterMovement: Rotation Settings
“Orient Rotation to Movement” turn that on
Also change the Z axis roation rate from 360 to something like 275 that will smooth its turning a bit.
There is also “Use Controller Desired Rotation” try that if the other doesn’t giv you the result you want.
This Guy explains all this in this video I found his tutorial very helpful to get me off the ground with AI.
