THE_DON_PABLO

This is the exact thing that happens to me, i have read a few peoples issues now and it all seems to be the same issue. 
Funny enough it seemed liked the R2 started going funny when the R3 come out.... 
I tried what you suggested on my post and my r2 wont even get a connection from my router now. 
If i am luckily enough for the r2 to show up on wifi or Ethernet I'm stuck with the set up page anytime the box restarts.
I cant keep the r2 on long enough to be able to allow for a pushed update or firmware either .
I had my r2 since 2021, like i said in my post never moved it, disturbed it or anything that would cause these issues and a few people now have explained the exact same issues.
I cant even force a factory reset from the button at the back, it does nothing. 
Feel like throwing it at the wall
 

This is the exact thing that happens to me, i have read a few peoples issues now and it all seems to be the same issue. 
Funny enough it seemed liked the R2 started going funny when the R3 come out.... 
I tried what you suggested on my post and my r2 wont even get a connection from my router now. 
If i am luckily enough for the r2 to show up on wifi or Ethernet I'm stuck with the set up page anytime the box restarts.
I cant keep the r2 on long enough to be able to allow for a pushed update or firmware either .
I had my r2 since 2021, like i said in my post never moved it, disturbed it or anything that would cause these issues and a few people now have explained the exact same issues.
I cant even force a factory reset from the button at the back, it does nothing. 
Feel like throwing it at the wall
 

You can use Apply to WAN for ethernet or WiFi. If your ISP supports priority tags then you may see a benefit but if they don't you'll see no difference with it enabled/disabled.

Could you provide a screenshot of the rest of QoS please?
In terms of Traffic Prioritization for a console select Games Console, for PC you can use Call of Duty or Games Console. Gaming/Voice should be selected if playing over WiFi or Normal if your device is connected via ethernet.

Ping Assist on will allow any servers under the value you've set, so having it set to 200 is counter productive when trying to force specific servers. I can't answer what it is your friend is doing but they're doing everything wrong to force a server, if you yourself want to force a server then Ping Assist must be on 0.

That is what we'd expect to see with Ping Assist enabled as you'll get a much better ping that server in the UK. You'd need to set Ping Assist to 0 to try and force the US servers.

I can't really answer that without looking specifically at his setup, it may be that he is using a VPN and that could explain it. Is he manually pinging the server? It's possible he's getting a mislocated server so one that is in the UK/EU but appears on the map in the US

The easyway i  play us games is 
  Set ping assist to 0   set  your locatiln over the us server     turn atuo ping off first 
 Then you have to  allow the us data  centre servers   when it appears click allow   you have to do this procedure every  time you restart  the game  or logout of game untill youve allowed every us data centre  
 Also i only use the norma geo setting not teo fence  so i se it over the us  only   thers no geo fence set anywhere else 
 This is the method i use for cod  it should be the same for wz
 Btw im from uk as well  turn off fast search   turn  on strict mode
 Your freind has probally  enabled the data centres   already  you just need to do the same
 When you set ping assist to 200 ms  
Ping assist we look for games  for any ping in that region   so it will try to find you games  with the lowest ping    ie  games in europe
 So its not good for what your trying to  do
  There is another way but its  a lot more time consuming  i think your freind might have done this
 If you set your ping assist to 80  this will get you your us 
Then you have to manualy block every other game servers apart from the us one 
 Thisill take a while i mean a long long process 
I not tried it myself as its to time consuming  you have to block every data centre in europe
 The first method is so  simpe 
 
Btw the sata centres appear when you first launch the game

Most games are server based, you just need to to connect to the server, you don't need ping assist high to connect to players - you don't make a direct connection to them. Having Ping Assist so high could allow you onto any server below that limit which isn't what you want when trying to specifically force a certain area/server. By allow in this instead I just mean allowing you to connect, not specifically adding to the allow list. Your friend must have been lucky because it's definitely not the right way to force a server.