Weird internet situation

[CassiTheNerd420]

my gf has her Xfinity modem/router in her downstairs living room and she lives on the second floor, her mom doesn't want an Ethernet cord going all the way from the living room to her room so what ive done is put one of those wifi extenders with an Ethernet port on the bottom and plugged it in at the bottom of her stairs a room away from her modem/router i ran it all the way upstairs into her room into a second wifi router (for wireless vr which works great but thats just her local connection) then from the router to her pc, and let me tell you her connection sucks, her connection is constantly fluctuating and her discord freezes constantly probably every 20 min, idk what wifi plan her mom uses but im wondering what i can buy to improve this whole situation, i was thinking about those 200 dollar Xfinity mesh network extenders and run 2 of them from the living room to her room but idk if that'll help 

[TomChaai]

Wireless wifi range extenders improve range, but absolutely butchers network performance because the data needs to hop over several times in the air instead of just once.

Your text description is not clear enough for us to understand how exactly does wifi spreads from downstairs to upstairs with your setup, did it just hop from downstairs to upstairs over the air? That doesn't improve anything. 

Google "powerline ethernet adapter". Using existing wires in any way is going to be better than your current wifi setup.

[CassiTheNerd420]

20 hours ago, TomChaai said:

Wireless wifi range extenders improve range, but absolutely butchers network performance because the data needs to hop over several times in the air instead of just once.

Your text description is not clear enough for us to understand how exactly does wifi spreads from downstairs to upstairs with your setup, did it just hop from downstairs to upstairs over the air? That doesn't improve anything. 

Google "powerline ethernet adapter". Using existing wires in any way is going to be better than your current wifi setup.

theres a wireless range extender about 15 ft from her xfinity modem a room over, then i plugged an Ethernet cord into the range extender and routed it up to her room into an netgear router then an Ethernet into her pc, and for the powerline adapter she has old wiring in that house probably 20 years old and her room probably isnt on the same side of the breaker as the modem room i was thinking about a mesh network but im not to network savvy and dont know if either powerline or mesh network would be better to try first.