I saw some posts about the NV2 package, but they referred to enabling a different package.
Did the fixes in the wireless-nv2 package get migrated into the general wireless package?
My symptoms are long ping times to the MT and just slow performance.
64 bytes from 192.168.111.1: icmp_seq=24 ttl=64 time=7.617 ms
64 bytes from 192.168.111.1: icmp_seq=25 ttl=64 time=4.602 ms
64 bytes from 192.168.111.1: icmp_seq=26 ttl=64 time=6.766 ms
64 bytes from 192.168.111.1: icmp_seq=27 ttl=64 time=10.470 ms
64 bytes from 192.168.111.1: icmp_seq=28 ttl=64 time=8.973 ms
64 bytes from 192.168.111.1: icmp_seq=29 ttl=64 time=7.524 ms
Request timeout for icmp_seq 30
64 bytes from 192.168.111.1: icmp_seq=31 ttl=64 time=9.114 ms
Request timeout for icmp_seq 32
64 bytes from 192.168.111.1: icmp_seq=33 ttl=64 time=11.468 ms
64 bytes from 192.168.111.1: icmp_seq=34 ttl=64 time=0.848 ms
64 bytes from 192.168.111.1: icmp_seq=35 ttl=64 time=4.643 ms
64 bytes from 192.168.111.1: icmp_seq=36 ttl=64 time=11.589 ms

Here is my config
0 R name="wlan1" mtu=1500 mac-address=00:0C:42:64:BE:60 arp=enabled interface-type=Atheros 11N
mode=ap-bridge ssid="mt-n" frequency=5300 band=5ghz-onlyn channel-width=20mhz scan-list=default
wireless-protocol=802.11 wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no
bridge-mode=enabled default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 hide-ssid=no security-profile=secure compression=no

There is no separate nv2 package for v5rc11, what you saw probably referred to the old v4.

send report to support

4-10ms on wireless is a very good ping result. what is the problem exactly?

I have not seen slowdowns on my Macbook pro connecting to 5.0rc11 yet.

My ping times go real high (sometimes in the 90ms). I've actually removed MT from the equation and have duplicated it on multiple non MT access points when the behavior doesn't exist on other systems.
Validated this behavior with similar spec of Macbook Pro.
On my way to apple store now to duplicate with them.

[admin@mikrotik] > interface ethernet m
Console has crashed; please log in again.

if i type interface ethernet<<<<<

its crashed how to fix it

Mikrotik Version--5.0 rc 11

please contact support@mikrotik.com we will give you a test release of newer version where the console is not crashing.

thanks i send the email!