buy his PC... well, your closer to figuring it out anyway. I wonder if something is messed up with your lan ports or something blocking the games network priority.

Control Panel/Windows Firewall/Allow programs to communicate through Windows Firewall
also,
Advanced Settings/Inbound Rules
check for PnkBstrA, B in here as well.
IDK, maybe virus software

is this what you were talking about
 
 

my other land port I only have one or do you mean on the router.
No I picked up a 120 ssd just for battlefield  so my drives go .
samsung 128 ssd for /windows c drive
wd black 1tb/  storage d drive
Kingston 120 ssd  battlefield e drive
 
my hardware                    his hardware
4670k                              3570k
gtx 780                          gtx 760 
8 gigs of 1866 2x4            16 gig of 1600 2x8
z87 motherboard            z77 motherboard
650 psu                          750 psu
ssd for windows             240 ssd for windows
hd for storage                   wd 2tb drive
ssd for bf3 and bf4             windows 7 pro
 
windows 8.1
 
so I spent all last night doing a clean install of windows 8.1
I have nothing installed just drivers and bf4 and windows updates
 
and it the same thing 
 
like a guy can be like 3 feet away and I blast 8 shot and I know they all hit and nothing but 1 shot I am down
it not just that it get up from saves 99% of the time I cant I know your going to get hit now and then but come one
its like slow motion for me.
 
my fps with ultra is like 135 to 144  but no matter how fast my fps is it not going to help lag and hit detection
all I want is to have a fair game if I plow 10 shot in to a guy he should drop.
 
I am temped to go back to windows 7 I know you all say windows 8 and bf4 but how much of a performance hit will I take
I would rather lose 10 fps then not being able to play at all.
 
and I don't accept to go in to a game and come out with 150 kill 
 
but there other guys on like with good pc that can play the game  some say it the net code thing some say rubber banding
but I thing I have all them things
 
 

This is my motherboard
http://us.msi.com/product/mb/Z87M_GAMING.html#overview
 
Is there any ping test that don't use java he does not want to install it on his pc
http://www.pingtest.net/
 
 

I ran the test multiple times on that same server and it never was that much different if at all. If you are testing your friends PC then unplugging the connection from his and plugging into your PC and getting those results, I'd think there was something wrong. Have you tried installing that Killer software and configuring it correctly? You shouldn't get worse results than your friends PC. It's probably giving you a B rating because you are not running the packet loss part though. You make it sound like your friends PC is drastically different than yours, so I can't say this is the issue.
 
Also, it's been a while since I played BF, but I think there is a way to test the server and it will give you packet loss. If I remember right just about everyone I tried suffered from packet loss at the time. I know most people have the experience you describe, but I can't say to what degree.
 
As far as 8.1 I would think no. There shouldn't be any bandwidth used unless you have windows setup to check for updates automatically or something like that. Check task manager for applications and processes running. 
 

Here is something that should be basically the same, although I'm not expecting big improvements. It's just that a ping of 9 difference between PC's seems wrong.
 

backdoc77
looks like the only major difference between you and your friends setup is you are playing the game on a seperate ssd. Have you tried loading the game onto the c: drive and playing from there?

I've tried that myself and it didn't make a difference

The OP's issues have been addressed---> http://forums.evga.com/FindPost/2152270