Hello, my internet (I'm Australian) has been really laggy for the past few months since switching to NBN FFTC. I am using the TP-Link Archer VR1600v and even entering 192.168.1.1 is REALLY slow. Navigation on the settings page takes minutes to load even on a wired connection. However I have been able to find what may be causing my wifi to lag and that is the large amount of wireless light-bulbs and power switches we have connected to our guest network. I notice they are receiving quite a few packets and sending a lot of packets. The image I have attached shows a few of these devices compared to my Galaxy Note 9 which is connected to the normal 5GHz network. I haven't been able to use the wifi on my device properly which is probably why it has such low numbers, but in comparison the random light-bulbs and power switches are sending more packets than my phone.
Should I be concerned about them sending out so many packets? Also when I do disable the guest network my wifi connection on my phone is very good and can actually load reddit images.