upgrade from .30 to .46 and bandwidth test

I am setting up a brand new backhaul, nstreme dual. Both rb532a boards had .30 software and are equiped with SR5 radios. These are the older rb532s with cpu at 264mhz. First speed tests gave me around 24meg. Ran several of these and it was pretty consistant with the cpu load at 100% on both ends. I decided to upgrade the software to .46. Now after the upgrade, no other changes made, max is around 9.5 with 100% cpu on the bandwidth server end and around 40% on the bandwidth test end.
This is not good since this is going to be one of my main pipes and it must handle 23meg.
Anyone have any ideas?

tk

Leave it at .30 if it’s working for you. We’ve seen the same issues with upgrades as well to dual NStreme links as well as normal links. We leave ours at .27.