so, connection no.1 = black box > router a > cable connection cat6 to desktop
connection no.2 = black box > cable connected to the wall ( i'm not quite sure if cat 5 / 6 ) > cable from wall to router b
in the tests here i'm using the desktop that is connected to router a ( other users also connects here ), the iphone is connected to router b.
multiple users on router a
only an android tab, samsung mobile, iphone, and chromecast connected on router b
tests done on desktop was made with router a and no other users were at home
i tried both router a & b on iphone same results
*i'm using d-link dir-850L on router a and asus rt_ac66u on router b ( for some strange reason, i'm having higher latency on the asus router that is why i'm connecting to the d-link one )