how to connect routers with same speed

zayed builder

Distinguished
Jan 1, 2014
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hey guy we have 2 floors in our house so we have in total of 3 router (one that gives the internet to the router and its connected via fiber optic ) then 2 routers 1 for g-floor and one for the second so the problem is my wifi connection in my room isnt good enough so when i plug an ethernet the speed goes down in the home even when theres no activity my father decided that i dont use an ethernet but when theres a fouth router connected the internet stops in the home and only the 4th continue working ,,,,any idea to make all three routers work without a problem(the 4th router will be in my room connected to an ethernet)

ISP speed:50Mbps

i need someone to help i can give u access through teamviewer just pm me because the main router (after the router that give the tel that is connected through fiberoptic) is having etisalat firmware (custom firmware from isp ). +i dont know much in routers like wan or ip's or qos and anything