Heres the specs: ViciousPC clear ATX case Western Digital Raptor 10,000RPM SATA 74GB HD Windows XP Home Edition SP1 Enermax CoolerGiant 480W PSU BFG nVidia FX 6800 GT 256mb Athlon 64 3500+ socket 939 CoolerMaster Hyper6 CPU heatsink MSI K8N Neo2 Platinum Edition mobo 2X512Mb Corsair DDR 400Mhz Dual Channel TWINX1024 3200C2PT Microsoft Intellipoint Explorer 4.0 mouse Heres the big problem. I built this machine going on the fact that my last machine seemed to have the same problem as I do now and so Im starting to worry that the source has more to do with something about the way I have it setup but I cannot figure out what at all. I play Unreal Tournament 2004 a lot and for a machine like mine I experience what you could think of as lag or a sluggishness in responsiveness to my actions, and over time it gets to the point that its nearly impossible to hit anything because its so delayed or i cant track where people are going or i die before i even know what hit me(but I dont jump around as if Im experiencing network lag). I have also tested my connection on dslreports.com for packetloss and tests show I have none. I have swapped out the PSU with an Antec TruePower 480watt and the problem is still existant. Its wierd because as I play the game over time it seems to slow down more and more and my mouse sensitivity seems to go down more and more. Funny thing is that my frames per second remain at a stable 84 fps and my gpu temperature hovers right on 60°Celcius and my CPU is generally between 40°-48°Celcius. I have even bothered to install my own Linksys Etherfast NIC card to see if there was a driver problem with the motherboards ethernet drivers but that didnt really change anything. Ive used the Windows Memory Diagnostic tool to test my memory for faults and it passed all tests. Ive ran Prime95 for 3 hours without a single fault as well. Ive also formatted and reinstalled WindowsXP to nothing but the newest system and display drivers(in the correct order btw) and ut2004 and still has the same problem. Ive also reformatted and installed the ATI 9800 Pro 256bit and still have the same problem(I even installed it before reformatting just to see if it would make a difference. Ive also tried installing it on a WD80gig 7400rpm hd on the same system and still have the same problem. I cannot seem to pinpoint this wierd lagginess that I get over time but it is really annoying. Ive also tried tweaking windows to run faster as well as the game and its not made a difference. Ive also tried swapping out the Explorer mouse with the MX510 and noted no difference in gameplay. Im coming to the conclusion the motherboard archtecture is flawed but was wanting more input from the community before I go out and buy a different motherboard or perhaps a different CPU and motherboard altogether. At one point my computer was restarting itself when I tried exiting the game after installing SP2 and the games newest patch and I happen to share this problem with many other gamers with the same motherboard and an AMD A64 CPU. (see forum thread here http://www.ina-community.com/forums/showthread.php?s=&threadid=426274). Ive also moved from 3mbit cable to 1.5 mbit dsl in two different locations and have the same problem. Ive also switched from using onboard sound to Creatives SB Audigy 2ZS card to no avail. If anyone has any idea as to the cause of this your help would be greatly appreciated.

Still sounds like network lag to me.

Well, do you have it offline too? Against the bots or smth...? Or is it clearly a onlinegame problem? Do you have it on every server? LAN environment? Is your computer clean of malware? How is your firewall and AV setup? Tried openGL?

Well it occurs on LAN games as well(and even in single player) but of course its not nearly as evident since online is naturally slower. I know its not network issues outside my computer because Ive gone to different locations and the problem is still there. As I said also I did a fresh formatt and barebones install then the game and tried it and eventually w/in a few minutes or so the lag was clearly felt. I always keep my computer clean of malware via Spybot Search and Destroy, Ad-Aware, and AVG Antivirus, not to mention Im behind a Linksys Router at the moment and I use TPF Pro when Im not behind the router (although Ive played with it off and not seen a difference). I dont think Ive tried OpenGL except maybe once and it seemed extremely laggy.

Really hard to say anything about this... You use a slow LCD TFT monitor? :) Any settings messed up in Unreal 2004? ....bah

No I use a Samsung CRT 763MB...I figured this wouldnt be easy to determine whats wrong, if even anyone would be able to tell anyways, but its better than paying a techie to figure it out. I dont really expect anyone to know the solid answer but if you know something about that motherboard, cpu, or any combination of those components that have related issues please let me know

I would check my AGP bus performance (and everything else) with f.ex. Everest. But reading that history of your diagnosis, it seems to me, that something is not functioning right on your mobo chipset. Can´t find anything similar on the internet. Warranty? :)