I haven't been successful at getting snort working on my N5105/2.5GbE box yet, so I'm very interested in your experiences. (NICs seem to lock up, no TX when snort starts...) Works just fine (well, for some wacky definition of "fine") on an x86 VM, so that's where I've been working on it.
We've moved most of the action over to IPS mode of snort3 is not dropping traffic at this point.