quick question about changing the router

Spirch

Getting the hang of it
Dec 7, 2018
146
71
Canada
I just got a DS-2DE3304W-DE using a trendnet tpe-115gi for the poe

initial setup is
(1) modem (from ISP) ->
(2) router (microtik hAP AC) ->
(3) router (microtik cAP AC) ->
(4) poe ->
(5) camera

everything seem to work fine, everything is using cable, I activated it and I can see the video with rtsp (vlc) or iVMS

if i change (3) for another router (microtik RB951G-2HnD) with a wireless client between (2) and (3) instead of cable the camera keep cycling the link up and down every few seconds and I can't connect to it

(2) is the dhcp server

quick note; ip address is the same and when I change (3) the ip is assigned properly so the camera is doing a dhcp request

is there any specific thing that need to be done?