RB2011UAS-2HnD NAT performance is very bad

see my post : http://forum.mikrotik.com/t/ros-routerboard-nat-stablility-issue-or-performance-issue/63987/1

When I click through hyper links in a local web sites page, I always get random connection timed out error in IE or Chrome.
that’s a big issue of this product if it’s not ROS issue.
I have to put my linksys back on. very disappointed purchase.

please don’t make duplicate posts, if you have one active topic already