Mikrotik router, Tapo cameras and HikVision NVR

Hello everybody,

I am facing a very strange situation that is not most likely related to Mikrotik router i am using or the configuration but i am asking for your help because of the extensive capabilities of Mikrotik products for troubleshooting network problems. I am not a network engineer so i am asking for your understanding if the terms i use are not precise.

The setup:
FTTH → RB4011 → vlan 41 → Hikvision NVR, and 4 tapo cameras.
I have assigned static IPs to the cameras (i am not sure because i dont remember) most likely at the camera level but also at the router level.
I have created onvif accounts to the cameras and i have connect the cameras to the NVR so i can see the feed through it. The NVR has recognized the cameras and everything is working as expected.
When i am accessing the cameras from LAN through hik-connect app → working fine
When i am accessing the cameras from WAN through hik-connect app → working fine
When i am accessing the cameras from WAN through tapo app → working fine
When i am accessing the cameras from LAN through tapo app → my whole LAN freezes for 4-5 min, it is completely unusable. Nothing in the logs of the router. After 5 min, everything is working fine again. I have sent email to TP-link support and after 1 month troubleshooting no joy.

(I have changed wiring with new cables, nothing. The bandwidth is more than enough and everything is working fine from WAN or LAN through the hik-connect app…) Only through LAN with tapo is chaos…

Can it be a loop in my network? (not the wiring, it is very straightforward, i am thinking that the tapo app could maybe activate a loop somehow). If yes is there any way to check if this is the problem and is there any way to prevent that from happening?
I have seen in the interfaces in my RB4011 that there is an option loop protect. Should i enable it?

Thank you in advance if someone is kind enough to help me on that with some thoughts.

Be careful… I don’t know for tapo but with TP-Link vigi NVR and cameras I had a problem where NVR doesn’t have DHCP server. Instead NVR is working like POE switch.

Problem is, NVR assing IP address regardless IP address is in use or not… Don’t know if they fixed that but i had problems because of that.