I've been having some issues with my wireless adapter. I initially built the system a year ago, and everything worked fine until I moved back to school in September, where my PCI wireless adapter started having a hard time connecting and when it did connect, I was sometimes getting ping spikes. I got fed up and bought an ethernet cable to solve the problem for the time being, but I'm moving somewhere where I'll probably need working wireless in a week.
When I got home for the holidays and had to use my wireless adapter again, the adapter was having a hard time. First I was getting excessive ping spikes along with occasional stuttering in games(which I never got on the wired connection). I thought the stuttering was an OC/hardware issue, so I reverted to stock clocks, ran memtest and FurMark but couldn't find any issues. I suppose I should mention that even on stock clocks, Prime95 will usually throw a rounding error on one of the cores after about 5 minutes. And that over the past few months I've gotten a random BSOD usually once a month while gaming late at night, but each with different error codes(MEMORY_MANAGEMENT, then NTFS_FILE_SYSTEM, then SYSTEM_SERVICE_EXCEPTION)
Then it started having a hard time seeing the network, and would sometimes flip flop between saying the network was or wasn't there. I decided that the adapter itself was dying and went out and bought a new one.
I guess I should give hardware specs before I get too far in:
CPU - i7 2600k, currently stock clocks. It's been OCed to 4.3 GHz for most of its life, but I reverted it back to stock clocks when I saw the stuttering.
Memory - 16 GB G.Skill Ripjaws Z DDR3-1600, part number is F3-12800CL9Q-16GBZL
Mobo - ASUS P8P67 Pro
SSD - Corsair Force Series 3 120 GB
HDD - WD Black 1 TB, part number is WD1002FAEX
GPUs - EVGA GTX 560 Ti in SLI
PSU - Corsair TX750
Sound card - ASUS Xonar DX
Initial PCI Wireless card - D-Link DWA-552
New PCI wireless card - TP-Link TL-WN951N
I installed the new card and it connected. I was initially able to play Mount and Blade with some friends. There were some occasional stuttering issues, but it was mostly fine. Then we went to play a game of Dota 2, and after about 10 minutes, the card basically died. My Ventrilo ping was 1k ms minimum, and it eventually disconnected from both Ventrilo and Dota(I can't remember if the Windows network thing said it was disconnected or not).
I downloaded PingPlotter because I was fed up with using the slowly updating ping in Ventrilo as a diagnostic. I randomly decided to run FurMark again and found that as soon as I started FurMark, I started dropping all my packets. I initially thought it was a temperature issue(I thought this was why the first card died, the only free PCI slot is right in between my video cards and the PCI-E slot is taken up by my sound card). However, I found that if I killed my fan profiles down to 10% and opened a crappy game to keep the core clocks on both cards at 850 MHz(heating both cards up to about 60 °C), the wireless card still worked fine.
I'm finding now that whenever I open ANY game, my packet loss goes to 100%. Initially, the packet loss would go back to zero the second I closed or alt-tabbed out of the game, but for some reason now sometimes it'll stick at 100% longer, until I tell the windows wireless thing to refresh the networks its displaying or until I tell the windows wireless thing to reconnect. Also, oddly the game I initially used to rule out temperature now trips the packet loss....
However, when I disable SLI, no packets are lost upon opening games. I can at least play but it's kind of annoying that I can't use my second card.
I've updated the graphics card drivers and motherboard chipset drivers to the latest available on the manufacturers' websites. There are no newer wireless adapter drivers available from the manufacturer's website. I'm not really sure what else to try at this point. Any suggestions?