Please forgive me if I am asking silly question, but what is the proper way to put some ports on RB1100 in simple switch mode?
I always thought, that switch is multiport bridge, so I made bridge and assigned few ports to the bridge, but then I had problems with pockets passing though between clients connected to the ports assigned to the bridge, but pockets were passing fine between LAN and WAN. On LAN side between clients, ping worked for 20s, then it stopped for 10s and so on. I saw the default configuration on RB750G with master and slave ports, which works as a simple switch 2-5 between LAN ports, then I changed my configuration to master and slave on my RB1100(Os 5.15) and now it works as it should and the packets doesn't go through CPU as in Bridge mode with ports assigned. I had to create master on each switch group on RB1100, but now I want to add only two ports from group 2 to my switch in group1, ports 1-5. I am wondering what is the proper way to configure mikrotik devices to switch some ports with the switch chip not the CPU and it won't be any problems between clients on LAN side.

If someone could explain a simple setup, because I think I have same problem with other devices and port switching, because I used bridge and assigned ports to bridge also on other MikroTik devices.

for example, if you want to connect two RB751U-2HnD on 192.168.88.0 :
- the first one acts as a router 192.168.88.1, Port1(WAN) , 2-5(switch(master/slave)), Wifi(bridged), the default configuration WAN port 1, port 2 master, ports 2-5 slave to port 1 works fine
- second 192.168.88.2 simple AP, with all servers off and all ports switched together, WiFi(bridge mode), what changes to default configuration should I make

Is it right approach, to make port 1 master and 2-5 slave to port 1 and it's done?
Do I have to connect AP to my router with AP's master port1, or it doesn't matter which port is AP connected, to router?
When is it appropriate to use multiport bridge?