You'll probably have to provide the netmask info for us to review. If you're using /24 then those all reside in the same network so I would expect them to be in the same broadcast domain.
If you have mismatched netmasks that could be trying to route traffic to the gateway which then reflects back. Ensure your devices have the same network, netmask and broadcast ip (e.g. 192.168.1.0/24 will have broadcast ip of 192.168.1.255)