slow kinect + freenect camera feed to workstation.

edit

I have two laptops. One is attached to a robot with a Kinect, Another one is workstation, running rviz, rostopic, etc Both is connected with wifi (adhoc or with router)

My problem is at laptop robot, Kinect+freenect runs fine, running rostopic hz gives 30Hz rate,

At the workstation camera feed is very slow. 3Hz or lower.

Is there any way to improve the rate? Compared to other nodes at robot, they are fast, e.g. /tf gives 50Hz

muaz@muaz-K43U:~$ rostopic hz /camera/rgb/image_raw
subscribed to [/camera/rgb/image_raw]
average rate: 3.444
    min: 0.290s max: 0.290s std dev: 0.00000s window: 2
average rate: 2.781
    min: 0.290s max: 0.419s std dev: 0.05287s window: 4
average rate: 2.880
    min: 0.290s max: 0.419s std dev: 0.04104s window: 7
average rate: 3.024
    min: 0.278s max: 0.419s std dev: 0.04033s window: 11
average rate: 3.064
    min: 0.278s max: 0.419s std dev: 0.03673s window: 14