So like the title says, I've experienced a major drop in performance when playing GunZ. The video is choppy and dragging the mouse cursor around is like hauling a ton of rocks. I've got videos to show the performance degradation:
http://youtu.be/Vm7Zk3d5J0s

I've been playing GunZ for a very long time (since 2005) and on budget hardware, so this is a new problem that's unrelated to my computer's performance because I've upgraded twice already and GunZ played fine until the recent updates this year.

Hardware

• Motherboard: ASRock X58 EXTREME6
• Processor: Intel Xeon E5649 (2.53GHz Hexa-core with HyperThreading)
• Random Access Memory: Kingston KVR1066D3E7SK3/12GI × 2 (24GiB DDR3 ECC RAM)
• Video Card: PowerColor AX6450 1GBK3-SH

so useless having 24 gig ram unless u edit.

My guesses:

-Background applications conflicting

-Firewall/Anti-virus

-Comp is overkill for GunZ, causing sliding and delays. Go to options and change your MAXIMUM fps limit to 240 (which is actually 250).

-If the above doesn't work, when opening gunz run it on one core only and see how that affects things.

i QQ. i got crappy dual core...

It's probably an issue with GunZ. I don't think I've overlooked any of the basic issues.

1. There isn't really anything running in the background other than the standard Mozilla Firefox, Microsoft Outlook, and AOL Instant Messenger. GunZ seems to be self-contained enough to not rely on other applications to play nice.
2. I do not use antivirus; I simply don't get infected. Windows' built-in Firewall shouldn't be causing any problems; if it did, everyone else would get the same problems.
3. GunZ has worked on my computer before. In fact, it was the first piece of software I installed and ran on my system (when the game was still under ijji). My software configuration hasn't changed (except for updates) since.

I'm going to do a fresh install of Windows when I have time to try to isolate the problem.