I'm kind of new to what I am suggesting, but I have noticed a little less warp and few FR hits in the last week.
Spyware. Theory: some geek is out there sticking his finger in your PC while you play.
There are a few web sites and some software out there that are trying to help.
How does it drop your Frame Rates? Well, I'm not sure if this is correct, but if they are probing you Hard Drive, and your system is using enough hard resources that it is "Swapping" in the virtual memory, then the HDD and IDE buss is active and could slow your entire system for as long as they are probing.
As I understand it, this is only a few seconds at the most, but it is exactly that few seconds that I had been experiencing.
Here are 2 sites that may help.
http://www.lavasoft.de/ http://grc.com/optout.htm Both have software that you can use free to check your system.
I like the Ad-Aware from lavasoft myself.
Both programs found and deleted files that were not put on my HDD by me, and registry entries that directed this intrusive traffic.
Also, before I let the software clean my system, I noted the files it located and found them on my system using Explorer.
Out of curriosity, I turned off the software, and disconnected from the net.
Immediately upon disco, the files disappeared, and upon reconnection they were back.
They however have not come back since I let Ad-Aware clean things up.
I am not saying this is your problem, but it may be worth a look.
Regards,
SkViper