Packets being rejected from RB532

I am having a problem where many packets are being rejected from my RB532. I am running a 5GHz, Ubiquity 400mW, NStreme and Best Fit wireless link that has a -60dBm signal. The wireless portion appears to be perfect, but the router will reject packets sometimes very severly from any interface. Is this a bug in 2.9.x (I’ve tried 2.9.5 and 2.9.6)? There is only about 3-10MBits going across the link but CPU load is anywhere from 40-90% (mostly 50%). I’m running the router at 330MHz, would 264MHz be better?

I will post any information I can to help solve this problem.

Any help would be MUCH appreaciated,
Ken

What do you mean by rejecting packets? They fail passing through router? Where do you see they are rejecting? Firewall?

I have packed rejected too and more other users not only on rb.

http://forum.mikrotik.com/t/packed-rejected/3829/1