RB2011 Bonding and lost packets

Hi People,
I configured one RB2011 (6.44.6) in bonding mode 2 ports ethernet WAN, mode balance rr and layer 2-3
Bonding in bridge mode with port ethernet number 3.
In port number 3, is present one normal notebook with Intel i9 octacore - 16GB ram, in this notebook run ping 8.8.8.8.

This notebook in normal mode, the ping 8.8.8.8 receive reply 27ms continuously, all ok !
If I start one download, ping receive delay and lost packets, if start second download and very worsen… many lost packets and ping 150-250ms
I tried with another computer and equal problem.
The strange thing, connect 1 wan directly on pc, start well eight! download and ping perfect with reply 27ms
In the log rb2011 no problems, cpu rb2011 10-12%
:confused: :confused:
I noticed the problem start when I pass 50mbps (the WAN is 2 x 200mbps)

The configuration is very simple:

# apr/08/2020 03:16:41 by RouterOS 6.44.6
# software id = Y7PP-S2V8
#
# model = 2011UiAS
# serial number = 7DD508439789
/interface bridge
add name=bridge1
/interface ethernet
set [ find default-name=ether3 ] mac-address=CC:2D:E0:EC:54:A2
/interface bonding
add arp-ip-targets=172.16.0.3 name=bonding1 slaves=ether2,ether3 transmit-hash-policy=layer-2-and-3
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/interface bridge port
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=bonding1
add bridge=bridge1 interface=ether6
add bridge=bridge1 interface=ether7
add bridge=bridge1 interface=ether8
add bridge=bridge1 interface=ether9
add bridge=bridge1 interface=ether10
/ip address
add address=192.168.0.226/24 interface=ether6 network=192.168.0.0

“Balance-rr is the only mode that will send packets across multiple interfaces that belong to the same TCP/IP connection.
When utilizing multiple sending and multiple receiving links, packets are often received out of order, which result in segment retransmission, for other protocols such as UDP it is not a problem if client software can tolerate out-of-order packets.”

Source: https://wiki.mikrotik.com/wiki/Manual:Interface/Bonding#balance-rr

I guess the above is the reason you are facing those problems…