I think I may have figured it out. It not the rain on FPS lagging me its the actual game. I noticed now that when I had the net_graph up, that my FPS was actualy higher than in any other game I own, but somtihing about that area makes my gameplay chunky. I checked it on another computer and it did not happen. So it may just be me, sorry if I wasted anyones time.
Here's my DXDiag and screen shots of the spot anyway
it doesnt show my vid card here, I have an ATIx600 with 128mb.
Time of this report: 10/3/2007, 12:44:18
Machine name: CHRIS
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: Pavilion zd8000 (EC303UA#ABA)
BIOS: Ver 1.00PARTTBL;
Processor: Intel(R) Pentium(R) 4 CPU 2.80GHz (2 CPUs)
Memory: 2046MB RAM
Page File: 580MB used, 6311MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode
This is me with my back to the spot, 40 some FPS
I am standing in the same place, facing the light source. FPS drops by half
[edit: links]