These were some discount models (not by Cisco, Netgear, HP or names) so it was costly to find out where the issue was. Imagine spending 10s of thousand in engineering over your buyer picking up a deal? We were not happy about this.
Given the high number of devices the switch will have to be commercial in nature with a big table for MAC addresses and such. The consumer grade models may buckle under this load.
The GB switch even if it's consumer stands a better chance of working here because most have bigger buffers and can process more packets per second. That said, your system may have been on the verge/edge of being in trouble with all those hops already and the new switch is the straw that broke the camel's back.
HOWEVER you have way too many switches and may be breaking an old rule about number of switches from one end to another. https://serverfault.com/questions/724607/how-many-network-switches-can-i-daisy-chain-together kicks this around with the usual 7 hops and spanning tree limitations and so on.
Finally the things that happen in switches mean it may take time for all the switches to learn the MAC addresses. But I don't think that's in play here yet.
I have an Amcrest 16 channel network video recorder (NVR). Model number NV2116. I have connected it to 16 cameras. The recorder is in an office that has only one network cable running back to the main network switch. I need to add a switch in the office where the NVR resides in order to connect a PC to the network.
Everything works fine when connected directly to the main switch.
See links:
Network schematic with no switch
Network graph with no switch
The issue is that when I connect the NVR to the network through a switch I get erratic network reception by the NVR.
See links:
Network Schematic With Switch
Network graph with switch in place
This causes stuttering and dropped frames in the recordings. When I connect the NVR directly to the main switch, everything runs smoothly.
I have tried three different network switches, all with the same result of erratic network reception by the NVR. I have no clue why adding the switch would make any difference.
Network switches I have tried are all 10/100. I have not tried a GB switch yet but I am thinking this will not matter.
Can anyone offer a solution short of running a dedicated network cable back to the main switch?

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