Wireless question

Hi
I have setup an link 6km with R52hn cards bothsides on Nstreme dual slave, my signal strength is -61 both sides, my transfer rates is 65mbps max and under load it drops to 30mbps, can that be an allignment issue? I was hoping on getting a link over 100mbps, What am I doing wrong?

Please help

Most of the time it is a hardware problem, CPU just max out before you reach that speeds.